List of heat waves

This is a partial list of temperature phenomena that have been labeled as heat waves, listed in order of occurrence.

Before 20th century

• 1540 European drought - Extreme drought and heatwave lasting 11 months in Europe.
• July 1743 heatwave in China - Beijing reached 44.4 °C (111.9 °F) on July 25, higher than any modern records. 11,400 people reportedly died.^[1]
• July 1757 heatwave – Europe, hottest summer in Europe since 1540 and until 2003.^[2][3][4]
• 1808 United Kingdom heat wave
• 1881 North American heat wave[5]
• 1896 Eastern North America heat wave – killed 1,500 people in August 1896.
• 1900 – historical heatwave of the center of Argentina between the first eight days of February 1900 known as "the week of fire" affected the cities of Buenos Aires and Rosario with temperatures of up to 37 °C (99 °F) but with a very high index of humidity that elevated the sensation of heat to 49 °C (120 °F) severely affecting the health of people and causing at least 478 fatalities.

20th century

• 1901 – 1901 eastern United States heat wave killed 9,500 in the Eastern United States.
• 1906 – during the
  1906 United Kingdom heat wave
  which began in August and lasted into September broke numerous records. On September 2 temperatures reached 35.6 °C (96.1 °F), which still holds the September record, however some places beat their local record during September 1911 and September 2016.
• 1911 – 1911 Eastern North America heat wave killed between 380 and 2,000 people.
• 1911 –
  1990 United Kingdom heat wave
  .
• 1911 – 41,072 deaths were reported during a heat wave in France.
• 1913 – in July, the hottest heat wave ever struck California. During this heat wave, Death Valley recorded a record high temperature of 57 °C (134 °F) at Furnace Creek, which still remains the highest ambient air temperature recorded on Earth.^[6][7]
• 1921 – Hottest July on record across Eastern Canada and parts of the Northeastern US, part of a very warm year in those places. Parts of the
  Central England Temperature for July was 18.5 °C (65.3 °F), which was the 8th warmest since records began in 1659, and the warmest since 1852. The year of 1921 was the warmest on record at the time but has since been eclipsed by 15 other years.^[8]
• 1923–1924 – during a period of 160 such days from 31 October 1923 to 7 April 1924, the Western Australian town of Marble Bar reached 38 °C (100 °F).^[9]
• 1930s – Almost every year from 1930 to 1938 featured historic heat waves and droughts somewhere in North America, part of the Dust Bowl years.
• 1936 – 1936 North American heat wave during the Dust Bowl, followed one of the coldest winters on record—the 1936 North American cold wave. Massive heat waves across North America were persistent in the 1930s, many mid-Atlantic/Ohio valley states recorded their highest temperatures during July 1934. The longest continuous string of 38 °C (100 °F) or higher temperatures was reached for 101 days in Yuma, Arizona during 1937 and the highest temperatures ever reached in Canada were recorded in two locations in Saskatchewan in July 1937.
• 1947 – record breaking temperature of 37.6 °C (99.7 °F) in Paris recorded on June 26, 1947.^[10]
• 1950s – Prolonged severe drought and heat wave occurred in the early 1950s throughout the central and southern United States. Every year from 1952 to 1955 featured major heat waves across North America. In some areas it was drier than during the Dust Bowl and the heat wave in most areas was within the top five on record. The heat was particularly severe in 1954 with 22 days of temperatures exceeding 38 °C (100 °F) covering significant parts of eleven states. On 14 July, the thermometer reached 47 °C (117 °F) at East St. Louis, Illinois, which remains the record highest temperature for that state.^[11][12][13]
• October 1952 – Romania was hit by very hot weather. Temperatures reached 39.0 °C (102.2 °F) on 2 October, with Bucharest reaching 35.2 °C (95.4 °F). Temperatures on the night of 2–3 October were also just under 26 °C (79 °F).
• 1955 –
  1955 United Kingdom heat wave
  was a period of hot weather that was accompanied by drought. In some places it was the worst drought on record, more severe than 1976 and 1995.
• 1960 – on 2 January, Oodnadatta, South Australia hit 50.7 °C (123.3 °F) degrees, the highest temperature ever recorded in the Southern Hemisphere and Oceania.
• 1972 – heat waves of 1972 in New York and Northeastern United States were significant. Almost 900 people died; the heat conditions lasted almost 16 days, aggravated by very high humidity levels.
• 1976 –
  1976 United Kingdom heat wave was one of the hottest in living memory, with temperatures exceeding 32 °C (90 °F) somewhere in the country for over two consecutive weeks. The heatwave was also accompanied by one of the worst droughts in British history, and reservoirs reached historic low levels during the heat wave that would not be seen again until the heat waves of the 21st century. The maximum recorded temperature of the heat wave, 35.9 °C (96.6 °F) at Cheltenham, Gloucestershire
  was at the time the third highest reliably recorded temperature in British history, with only the 1911 heat wave achieving higher reliably recorded temperatures.
• 1980 – estimated 1,000 people died in the
  Dallas/Fort Worth area experienced 42 consecutive days with high temperatures above 38 °C (100 °F), with temperatures reaching 47 °C (117 °F) at Wichita Falls, Texas, on 28 June. Economic losses were $20 billion (1980 dollars).^[14]
• 1981 – August 1981 heat wave in the Pacific Northwest.
• 1983 – during the Summer of 1983 temperatures over 38 °C (100 °F) were common across
  central United States.^[15] This heat wave was associated with the I-94 derecho
  .
• 1983 – United Kingdom experienced a heatwave during July 1983. This was the hottest month ever recorded until it was beaten in 2006.

• 1987 – prolonged heat wave from 20 to 31 July in
  Nea Philadelphia, 8 kilometres (5.0 mi) northeast was 43.6 °C (110.5 °F) on 27 July, and were combined with high minima, with the highest being 30.2 °C (86.4 °F) in the center of Athens at 27 July and 29.9 °C (85.8 °F) at 24 July at Nea Philadelfia. The lowest minimum was 25.6 °C (78.1 °F) at the center of Athens. Moreover, humidity was high and wind speeds low, contributing to human discomfort, even during the night.^[16]
• 1988 – intense heat spells in combination with the
  drought of 1988, reminiscent of the dust bowl years caused deadly results across the United States. Official estimates report that 5,000 to 10,000 people died because of constant heat across the United States. Some estimates put total deaths at close to 17,000.^[14]
• 1990 – cities across the United Kingdom broke their all-time temperature records in the dramatic
  1990 United Kingdom heat wave
  temperatures peaked at 37 °C (99 °F). This led to one of the hottest Augusts on record, records going back to 1659. Also in France a several day heat wave is reported (France-Soir, 4 September 1990) with temperatures exceeding 40 degrees Celsius.
• 1994 - Intense heat wave in Poland between July and August, with maximum temperature 39,5 degrees of Celsius. This heat caused 1076 additional deaths in 10 largest Polish cities.^[17]
• 1995 –
  Chicago area and Wisconsin; temperatures reached as high as 41 °C (106 °F). The lack of emergency cooling facilities and inadequate response from civic authorities to the senior population, particularly in lower income neighborhoods in Chicago and other Midwestern cities, lead to at least 778 deaths—mostly which were African American Chicagoans. A series of damaging derechos
  occurred on the periphery of the hot air dome.
• 1995 – United Kingdom experienced its 3rd hottest summer since 1659. August was the hottest on record since 1659. The summer was also the driest on record since 1766. Temperatures peaked at 35 °C (95 °F) on 1 August, which did not break the all-time record.
• 1997 – United Kingdom experienced its 3rd major heatwave in 7 years with August 1997 being one of the hottest on record.
• 1999 – heat wave and drought in the eastern United States during the summer of 1999. Rainfall shortages resulted in worst drought on record for Maryland, Delaware, New Jersey, and Rhode Island. The state of West Virginia was declared a disaster area. 3.81 million acres (15,400 km²) were consumed by fire as of mid-August. Record heat throughout the country resulted in 502 deaths nationwide.[18] There were many deaths in urban centers of the Midwest.
• 2000 – in late Summer 2000, a heat wave occurred in the southern United States, breaking many cities' all-time maximum temperature records.

21st century

2001–2009

• In early August 2001
  an intense heatwave hit the eastern seaboard of the United States and neighboring southeastern Canada. For over a week, temperatures climbed above 35 °C (95 °F) combined with stifling high humidity. Newark, New Jersey, tied its all-time record high temperature of 41 °C (106 °F) with a heat index of over 50 °C (122 °F).^[19]
• In April 2002 a summer-like heat wave in spring affected much of the Eastern United States.
• In July 2002 a heatwave in China killed at least 7 people and resulted in hospitalization of over 3500 people.[20]
• During April 2003 there was a summer-like heatwave that affected the United Kingdom however mainly England and Wales where temperature records were broken.
• The
  European heat wave of 2003 affected much of western Europe, breaking temperature records. Much of the heat was concentrated in Spain, England and in France where nearly 15,000 people died.^[21]
  In Portugal, the temperatures reached as high as 47 °C (117 °F) in the south.
• The
  European heat wave of 2006 was the second massive heat wave to hit the continent in four years, with temperatures rising to 40 °C (104 °F) in Paris; in Ireland, which has a moderate maritime climate, temperatures of over 32 °C (90 °F) were reported. Temperatures of 35 °C (95 °F) were reached in the Benelux
  and Germany (in some areas 38 °C (100 °F)), while Great Britain recorded 38 °C (100 °F). Many heat records were broken (including the hottest ever July temperature in Great Britain) and many people who experienced the heat waves of 1976 and 2003 drew comparisons with them. Highest average July temperatures were recorded at many locations in Great Britain, Netherlands, Denmark, Sweden and Germany.
• The 2006 North American heat wave affected a wide area of the United States and parts of neighboring Canada during July and August 2006. Over 220 deaths were reported. Temperatures in some parts of South Dakota exceeded 46 °C (115 °F). Also, California experienced temperatures that were extraordinarily high, with records ranging from 38 to 54 °C (100 to 130 °F). On 22 July, the County of Los Angeles recorded its highest temperature ever at 48 °C (119 °F). Humidity levels in California were also unusually high, although low compared with normal gulf coast/eastern seaboard summer humidity they were significant enough to cause widespread discomfort.^[22] Additionally, the heat wave was associated a series of derechos that produced widespread damage.
• The
  hottest year on record, with previously unrecorded temperatures above 45 °C (113 °F). The 2007 Greek forest fires
  were associated with the heat wave.
• During the 2007 Asian heat wave, the Indian city of Datia experienced temperatures of 48 °C (118 °F).
• In January 2008, Alice Springs in Australia's Northern Territory recorded ten consecutive days of temperatures above 40 °C (104 °F) with the average temperature for that month being 39.8 °C (103.6 °F). In March 2008, Adelaide, South Australia experienced maximum temperatures of above 35 °C (95 °F) for fifteen consecutive days, seven days more than the previous longest stretch of 35 °C (95 °F) days. The March 2008 heat wave also included eleven consecutive days above 38 °C (100 °F).^[23] The heat wave was especially notable because it occurred in March, an autumn month, in which Adelaide averages only 2.3 days above 35 °C (95 °F).^[24]
• The eastern United States experienced an early summer heat wave from 6–10 June 2008 with record temperatures.^[25][26] There was a heat wave in Southern California beginning late June,^[27] which contributed to widespread fires. On 6 July, a renewed heat wave was forecast, which was expected to affect the entire state.^[28][29]
• In early 2009,
  Victoria recorded 3 consecutive days over 43 °C (109 °F), and also recorded its highest ever temperature 8 days later in a secondary heatwave, with temperatures peaking at 46.4 °C (115.5 °F). During this heat wave Victoria suffered from large bushfires
  which killed 173 people and destroyed more than 2,500 homes. There were also over half a million people without power as the heatwave blew transformers and the power grid was overloaded.
• In August 2009, Argentina experienced a period of unusual and exceptionally hot weather during 24–30 August, during the Southern Hemisphere winter, just a month before Spring,^[30] when an unusual and unrecorded winter heat wave hit the country. A shot of tropical heat drawn unusually far southward hiked temperatures 22 °C (72 °F) above normal in the city of Buenos Aires and across the northern-centre regions of the country. Several records were broken. Even though normal high temperatures for late August are in the lower 15 °C (59 °F), readings topped 30 °C (86 °F) degrees at midweek, then topped out above 32 °C (90 °F) degrees during the weekend.^[31] Temperatures hit 33.8 °C (92.8 °F) on 29 August and finally 34.6 °C (94.3 °F) on 30 August in Buenos Aires, making it the hottest day ever recorded in winter breaking the 1996 winter record of 33.7 °C (92.7 °F). In the city of Santa Fe, 38.3 °C (100.9 °F) degrees on 30 August were registered, well above the normal highs of around 15 °C (59 °F). As per the Meteorological Office of Argentina, August 2009 has been the warmest month during winter since official measurements began.^[32]

2010

• The
  Northern Hemisphere summer heat wave of 2010 affected many areas across the Northern Hemisphere, especially parts of Northeastern China and European Russia.^[33]
• Starting in May 2010, records were being set. On 26 May, at Mohenjo-daro, Sindh province in Pakistan a national record high temperature of 53.5 °C (128.3 °F) occurred.
• In June 2010, Eastern Europe experienced very warm conditions.
  Sahara desert and was not associated with rain. This helped the situation with high water levels in that part of the continent.^[34] On the 14th, several cities were once again above the 35 °C (95 °F) mark even though they did not break records. The only cities in Bulgaria breaking records were Musala peak hitting 15.2 °C (59.4 °F) and Elhovo hitting 35.6 °C (96.1 °F).^[35] On the 15th, Ruse, Bulgaria peaked at 37.2 °C (99.0 °F). Although it was not a record, this was the highest temperature recorded in the country. Five Bulgarian cities broke records that day: Ahtopol hit 28.6 °C (83.5 °F), Dobrich was 33.8 °C (92.8 °F), Karnobat hit 34 °C (93 °F), Sliven hit 35 °C (95 °F) and Elhovo recorded 36.1 °C (97.0 °F).^[36]
• From 4 to 9 July 2010, the majority of the American East Coast, from the Carolinas to Maine, was gripped in a severe heat wave. Philadelphia, New York, Baltimore, Washington, Raleigh, and even Boston eclipsed 38 °C (100 °F). Many records were broken, some of which dated back to the 19th century, including Wilmington, Delaware's temperature of 39 °C (103 °F) on Wednesday, 7 July, which broke the record of 36 °C (97 °F) from 1897. Philadelphia and New York eclipsed 38 °C (100 °F) for the first time since 2001. Frederick, Maryland, and Newark, New Jersey, among others exceeded 38 °C (100 °F) for four days in a row.[37]

2011

• The 2011 North American heat wave brought record heat to the Midwestern United States, Eastern Canada, and much of the Eastern Seaboard.
• A record-breaking heat wave hit Southwestern Asia in late July and early August 2011, with temperatures in
  sun spots.^[39]
• Most parts of the United Kingdom experienced an Indian summer between September and October 2011. The heat wave resulted in a new record high temperature for October at 30 °C (86 °F).^[40]

2012

• In March 2012, the
  Midwest experienced one of the most anomalous and largest heat waves of all time
  .
• In late June 2012,
  much of North America began experiencing a heat wave, as heat spread east from the Rocky Mountains. During the heat wave, the June 2012 North American derecho (one within a series) caused violent storms that downed trees and power lines, leaving 3 million people in the eastern U. S. without power on 30 June.^[41]
  The heat lasted until mid-August in some parts of the country.

• The
  wildfires due to periodic high winds.^[44]
• In late June 2013, an intense heat wave struck the Southwestern United States. Various places in Southern California reached up to 50 °C (122 °F).[45] On 30 June, Death Valley, California hit 54.0 °C (129.2 °F) which is the hottest temperature ever recorded on Earth during the month of June. It was five degrees shy of the world record highest temperature measured in Death Valley, which was 57 °C (134 °F), recorded in July 1913.^[46]
• Around Canada Day 2013, the same heatwave that hit the Southwestern United States moved north and hit southern British Columbia, Washington and Oregon. Temperatures in BC hit 40 °C (104 °F) in Lytton on 1 July 2013, and on 2 July 2013, the city of Penticton hit 38 °C (100 °F), with both Summerland and Osoyoos hitting the same. The Tri-Cities in Washington were among the hottest, with temperatures around 43 °C (110 °F).^[47][48][49] Edmonton also reached 33 °C (91 °F), but humidex values soared to 44 °C (111 °F), sparking severe thunderstorms and golf ball sized hail that evening.^[50]
• In China from July to August 2013, the South continued to experience an unusually severe heat wave with exceptionally high temperatures. In multiple regions of
  Fenghua, Zhejiang reached a new all-time record high temperature of 43.5 °C (110.3 °F), Changsha, Hunan in July 2013 achieved a high temperature "Grand Slam", all 31 days in July set a new daily record high temperature of over 35 °C (95 °F). Hangzhou
  experienced 14 consecutive days over 40 °C (104 °F) while Xujiahui Station of Shanghai shattered 140 years of meteorological records to set a new all-time record high temperature of 40.8 °C (105.4 °F). Sustained high temperatures caused many people, especially the elderly to get heatstroke or sunstroke, seriously affecting millions of lives. Many areas throughout China endured record high temperatures resulting in multiple continuous meteorological departments issued high-temperature orange or red alerts. 2013 saw a wide range of abnormally hot temperatures not seen for the past 60 years of national meteorological records dating back to 1951.
• In July 2013, the United Kingdom experienced the
  warmest July since 2006.^[51]
• The Argentina heatwave of 2013 was a historical phenomenon that occurred from 11 December 2013 to 2 January 2014 in the north and center of the country, as well as in northern Patagonia. It was the longest heat wave experienced in Argentina since records began in 1906 affecting many cities throughout the country. For the first time since the creation of the heat alarm system, a red level alert was issued for several days consecutive for both the city of Buenos Aires and the city of Rosario, which are the cities for which the National Meteorological Service conducts heat waves. From 11 December began to register a marked increase in temperatures, especially the maximum in a vast area of the central and northern Patagonian region, affecting southern Córdoba, southern Santa Fe, southern Entre Ríos, much of the province of Buenos Aires, La Pampa, east of Mendoza, east of Neuquén and Río Negro. From day 19 this anomalous situation began to expand towards the north of Argentina and returned to intensify on the central part, arriving to affect to 18 provinces, yielding the same towards 30 December in the central part and between 1 and 2 January in the extreme north of the country with the passage of a cold front that produced a change of mass of air. The long persistence of this heat wave (22 days), made the event an exceptional one, breaking several brands in regard to more consecutive days with minimum and maximum temperatures above the average in several meteorological stations of the affected zone. The National Meteorological Service communicated, through its daily reports, reports on the development of the heat wave. The strongest point of heat was registered in the city of Chamical, province of La Rioja with 45.5 °C (113.9 °F) in the city of Santiago del Estero (provincial capital) was 45 °C (113 °F) and in Buenos Aires (national capital) was 39 °C (102 °F). The extensive heat wave severely affected the health of thousands of people who needed medical assistance during those days, the historic heat wave caused at least 1,877 deaths in different points of the center and north of the country.
• From 28 December 2013 - 4 January 2014, Longreach, Queensland suffered through 8 days of temperatures soaring over 43.3 °C (109.9 °F)having broken numerous records ^[52]

2015

• Between
  April and May 2015, a heat wave occurred in India, killing more than 2,200 people in that country's different geographical regions. Daytime temperatures hovered between 45 and 47 °C (113 and 117 °F) in parts of two states over the weekend, 3–7 °C (5.4–12.6 °F) above normal. Andhra Pradesh was hardest hit, with 1,636 people dying from the heat since mid-April, a government statement said. A further 561 people have died in neighboring Telangana.^[53]
• Starting 20–21 June 2015, a
  severe heat wave has killed more than 2,500 people in Karachi, Pakistan.^[54]
• Between 28 June – 3 July 2015, in the
  Northwest United States, and southern British Columbia
  , a heat wave
• Between 30 June – 5 July 2015, a heat wave, brought upon by a Spanish plume, occurred in Western Europe, which pushed hot temperatures from Morocco to England. Temperatures in England reached 37 °C (99 °F), beating the previous July record from 2006 but the all-time record of 38.5 °C (101.3 °F) stayed unbeaten.

• From late June to mid-September 2015, unusual and prolonged heat waves occurred across Europe [de]. With temperatures above 40 °C (104 °F), new record temperatures have been measured since the start of weather recording in many locations. The Maghreb Mediterranean coast, south-western, central and south-eastern Europe experienced one of the biggest heat waves of recent decades.^[55]
• In August 2015, a heat wave affected much of the Middle East causing almost a hundred deaths in Egypt.^[56] Temperatures reached above 50 °C (122 °F) in Iraq and Qatar.^[56]

2016

2016 was the 2nd warmest year on record.^[57]

• During June 2016, record heat appeared in Arizona, southern Nevada, and southern California. Burbank, California, reached 44 °C (111 °F), Phoenix, Arizona, reached 48 °C (118 °F), Yuma, Arizona, reached 49 °C (120 °F) and Tucson, Arizona, reached 46 °C (115 °F), its warmest temperature in more than 20 years, on 19 June. Riverside, California, reached 46 °C (114 °F), Palm Springs, California, reached 50 °C (122 °F), Las Vegas, Nevada, reached 46 °C (115 °F), Death Valley reached 52 °C (126 °F), Needles, California, tied its all-time record high of 52 °C (125 °F) while Blythe, California, set a new all-time record high of 51 °C (124 °F) on 20 June.^[58][59][60]
• In July 2016, Mitribah, Kuwait reached 54 °C (129 °F) and Basra, Iraq reached 53.9 °C (129.0 °F). These are the highest temperatures ever recorded in the Eastern Hemisphere and on planet Earth outside of Death Valley.^{[61][62][63][64][65]}
• During September 2016, the United Kingdom experienced its hottest September day since 1911 with temperatures as high as 34.4 °C (93.9 °F) on the 13th. However, the all-time September record still stands at 35.6 °C (96.1 °F) from 1906.^[66][67]
• 2016 Indian heatwave was a record heatwave in April and May of that year. A national record high temperature of 51.0 °C (123.8 °F) was set in the town of Phalodi, in the state of Rajasthan. Over 160 people died with 330 million affected to some degree. There were also water shortages with drought worsening the impact of the heat wave. In India, the month of May is typically one of the hottest and driest. In 2016, the heat came early, with 111 heat-related casualties reported by 8 April 2016 the heat was coupled with drought which further devastation. Schools were shut down in Odisha and Telangana weeks ahead of summer holidays. Hospitals stopped performing surgeries. A ban on daytime (9 am - 6 pm) cooking was imposed to prevent accidental fires.

2017

• From 25 to 27 January 2017, Chile experienced a period of intense heat, with temperatures peaking on 26 January. The event was concentrated between the Metropolitan Region of Santiago and La Araucanía Region, being more intense in the region of Maule and Biobío Region. The meteorological phenomenon broke the records of maximum temperatures ever recorded in the cities of Santiago, Chillán, Concepción and Quillón, the latter being the highest maximum temperature recorded nationwide since data exists: 44.9 °C (112.8 °F).^[68]
• In February 2017, Australia experienced an extreme heat wave with temperatures as high as 47.2 °C (117.0 °F)^[69] in Taree, New South Wales and 47.6 °C (117.7 °F) in Ivanhoe, New South Wales.^[70]
• In April 2017, a severe heat wave affected Pakistan, with temperatures peaking at 51.0 °C (123.8 °F).^[71]
• In June 2017, more than 40 airline flights in the United States were grounded, with American Airlines reducing sales on certain flights to prevent the vehicles from being over the maximum weight permitted for safe takeoff^[72] and Las Vegas tying its record high at 47 °C (117 °F).^[73]
• In June 2017 again, a heatwave in Iran broke record high temperature. On 28 June 2017, the city of Jask had a dew point of 33 °C (91.4 °F) degrees, which is rare. Combined with the high air temperature, the heat index was 69 °C (156 °F).^[74] But the highest temperature in Ahvaz soared to 54 °C (129.2 °F) degrees and the humidity created a heat index of 61 °C (142 °F).^[75]
• Also, on 21 June 2017, the United Kingdom experienced a heat wave where temperatures reached the hottest since 28 June 1976, hitting 34.5˚C at
  London Heathrow Airport.^[76]
• June 29, 2017, Greece heat wave - hot air mass from Sahara Desert extended to the Balkans resulting in temperatures of 42˚C to 45˚C for three consecutive days.[77]
• In September 2017 a heat wave affected a large portion of the Eastern United States; it is notable for producing unusually hot temperatures the latest in a calendar year in places.^[78] The heat wave also affected parts of Eastern Canada.^[79][80]

2018

• In May and June 2018, a heat wave affected Pakistan and a significant portion of India. At least 65 people have died due to the heat as of 28 May. Temperatures have reached as high as 48 °C (118 °F).^[81][82] The health dangers to a large part of the population are exacerbated by the then-ongoing Ramadan fast.^[83]
• heat wave. The hot weather continued into early August before temperatures returned closer to the average during the second half of the month.^[86][87]
• LADWP
  had no power for over one week. In southwestern states such as Arizona and Colorado were above 38 °C (100 °F).
• 2018 Japan heat wave
  . In mid-July 2018, the heat wave in Japan arrived after a major flood. It caused over 22,000 hospitalization and 80 deaths.
• 2018 European drought and heat waves. Much of Europe experienced above-average temperatures and drought, which resulted in wildfires in Sweden and wildfires in Greece
  .

• Australian heat wave
  • From 25 December 2018, Australia was faced with constant record-breaking heatwaves with few breaks. December 2018 was recorded as the hottest December on record, while New South Wales had their warmest January since 2011.^[88][89] Adelaide recorded its hottest day on record on 24 January, surpassing the previous record from 1939, reaching 46.6 °C (115.9 °F) at 3:36 pm local time, and many settlements across South Australia set new records the same day. At least one man, 90 feral horses and 2,000 bats died, while 25,000 homes lost power.^[90][91][92]
  • load shedding.^[93] On 25 January Melbourne had its hottest day of either January or February: 43 °C (109.4 °F).^[94]
  • On 25 January the temperature of The Treasure Coast reached 45.0 °C (113 °F).[95]
• In late-May 2019, an unusually strong early-season heat wave affected the southeastern United States, breaking all-time May record high temperatures in several cities. Many locations also broke the record for the earliest-in-season 38 °C (100 °F) temperature.^[96]
• Also in late-May, an early-season heat wave affected parts of Japan. The town of Saroma in Hokkaido reached 39.5 °C (103.1 °F), the highest May temperature ever recorded anywhere in Japan.^[97]

• The
  2019 Indo-Pakistani heat wave reached a near record high temperature of 50.8 °C (123.4 °F) in Churu.^[98] The Indian and Pakistani media reported dozens of deaths due to the heat wave.^[99]
• 2003.^[102] The final new record was higher by 2 °C (3.6 °F).^[103] One month later, a similar event occurred, which also broke high temperature records in cities across several northwestern European countries. All-time national heat records were broken by 2.1 °C (3.8 °F) in the Netherlands,^[104][105] 3 °C (5.4 °F) in Belgium,^[106][107] 2.9 °C (5.2 °F) in Luxembourg,^[108][109] 2.1 °C (3.8 °F) in Germany^[110][111] and by 0.2 °C (0.36 °F) in the United Kingdom.^[112] On 27 August, the Royal Netherlands Meteorological Institute (KNMI) officially confirmed that the Netherlands were experiencing yet another heat wave when a temperature of 30 degrees was measured in De Bilt at 12.40. It was the fourth time ever since recordings began in 1901 that the country experienced two national heat waves in a single year.^[113] The same day, the Royal Meteorological Institute (KMI/IRM) declared the third heat wave of 2019 in Belgium. Since official temperature readings began, it has happened only once before (in 1947) that three heat waves were detected in a single year.^[114]
• A prolonged drought and heat wave affected the eastern United States from September to October 2019. September was one of the warmest and driest on record in many locations. All-time record high temperatures for October are also broken in numerous cities.
• A heatwave in Australia occurred in December 2019 with a record average temperature across the country of 40.9 °C (105.6 °F) on the 17th.^[115] This was surpassed on 18 December by an average temperature of 41.9 °C (107.4 °F).^[115] The prior record was from 2013 at 40.3 °C (104.5 °F).^[115] The heat exacerbated the 2019–20 Australian bushfire season.

2020

• On January 4, Canberra and Penrith in Australia smashed their all time records, reaching 44.0 °C (111.2 °F) and 48.9 °C (120.0 °F) respectively. Penrith was the hottest place anywhere on Earth that day.
• A late spring heat wave hit Northern New England and Eastern Canada: On May 27, Montreal broke its all-time May record high, reaching 36.6 °C (97.9 °F), which was also the second-highest temperature ever recorded in the city.^[116] Nearby Ottawa and Burlington, Vermont reached 35 °C (95 °F) on the same day.^[117] In mid-June, a second heat wave hit the same regions. Montreal and Burlington reached 32 °C (90 °F) for 6 consecutive days, one of the longest streaks on record in these locations. In New Brunswick, numerous cities broke all-time June record highs, with the hot spots Bathurst and Miramichi hitting 37.2 °C (99.0 °F).^[118] Caribou, Maine tied its all-time record high of 36 °C (96 °F) on June 19. The heat wave, combined with abnormally dry conditions, led to numerous forest fires in the province of Quebec.^[119] The heat wave continued into July, where Toronto, Ottawa, and Montreal recorded their second hottest July on record.
• Siberia heat wave: A Russian heat wave smashed an all-time record high in one Siberian town on June 20, reaching a scorching 38 °C (100 °F) possibly the hottest temperature on record so far north in the Arctic, continuing an off-the-charts warm year in what is typically one of coldest places on Earth. If that reading is found to be correct, that would break the town's all-time record of 37.3 °C (99.1 °F) set on July 25, 1988. Temperature records in Verkhoyansk date to 1885.^[120]
• United Kingdom heat wave: After a relatively cool July, temperatures skyrocketed to 37.8 °C (100.0 °F) on the 31st at
  London Heathrow Airport, now the fifth hottest temperature on record and the third hottest at the time of recording. After a brief return to average temperatures, Heathrow Airport and Kew Gardens rose to 36.4 °C (97.5 °F) on August 7, at the time the ninth hottest temperature on record, and a temperature of at least 34.0 °C (93.2 °F) was recorded somewhere in the UK for six consecutive days. 36.2 °C (97.2 °F) was again reached at Charlwood, Surrey on the 11th. Five "tropical nights", nights that record a minimum temperature of 20.0 °C (68.0 °F) or higher, were recorded during the heatwave, these being the 8th, 10th, 11th, 12th and 13th. Torrential downpours and thunderstorms after the heatwave brought flash-flooding to vulnerable regions, and despite the typically dry nature of European heat waves, 2020 was overall the fifth wettest summer on record.^[121]
• Western United States: Period of intense heat throughout the Western and
  Midwestern United States, starting in early mid-August. Death Valley reached 54.4 °C (129.9 °F) on August 16, the highest temperature since a reported 57 °C (134 °F) at the same location in July 1913. If this temperature is verified, it will be one of the highest temperatures recorded on earth
  .
• According to Japan Meteorological Agency official confirmed report, high temperature on 41.1 °C (106.0 °F) in Hamamatsu, Shizuoka Prefecture, Japan on August 17, where highest temperature record, since first operation of local observation on December 1, 1882. In Japan, many place hit on heatwave from late June to early September, include 40.5 °C (104.9 °F) in Isesaki and Kiryu, both Gunma Prefecture on August 11, and total 1,528 persons were heatstroke death from heatwave, according to Japan Health, Welfare and Labour Ministry official confirmed reported.^{[citation needed]}

2021

• Around mid-February, a jet-stream of Sahara dust brought a
  winter heatwave in Europe with daily temperatures nearly similar to max high during spring. In Berlin, a high temperature of 20 °C (68 °F) was reported on Wednesday and the next day it reached 19 °C (66 °F). Paris reported the same high temperature of 20 °C (68 °F) while Warsaw and London had it around 18 °C (64 °F). In Asia, a record-high winter temperature was declared in Beijing on February 21 at 25.6 °C (78.1 °F).^[122]
• On May 20, the May record 31.9 °C (89.4 °F) was reported north of the Arctic Circle at 67.6° North, 53° East.
  2021 Siberia wildfires.^[125]
• From June 3 to 6 the northern Great Plains and southern Canadian Prairies experienced a heat wave. On June 4, Gretna, Manitoba, reached a temperature of 41.3 °C (106.3 °F), the highest recorded temperature in Manitoba since the 1980s and the earliest in the year occurrence of above 40 °C (104 °F) temperatures in Canada.^[126]
• In mid-June, record temperatures were recorded in multiple parts of the Southwestern United States, reaching a maximum of 53 °C (128 °F) at Death Valley, CA on June 17.
• In late June, the 2021 Western North America heat wave occurred, causing temperatures to soar above 38 °C (100 °F) in the Pacific Northwest. All-time record high temperatures were recorded in cities such as Portland 47 °C (116 °F) and Seattle 42 °C (108 °F). Lytton, British Columbia, reached 49.6 °C (121.3 °F), surpassing the day prior 47.9 °C (118.2 °F), which had exceeded the all-time high temperature ever recorded in Canada.^[127]
• In June 18 to July 18 in Kouvola Finland, the Finnish heat wave record broke: already 31 consecutive heat days came full.
• in the last week of July, a heat wave in Turkey, Greece, Italy and other countries in the region has begun.^[128][129] On August 11, 48.8 °C (119.8 °F), the highest temperature ever in Europe, was recorded in Floridia, Sicily.^[130]
• In July, a heat wave combined with drought, low natural gas production, and COVID-19 delays to cause widespread power outages across the Middle East, with protests in Iraq, Iran, and Lebanon.^[131]

2022

• During mid-January 2022, several countries of South America, including Argentina, certain parts of Brazil, Paraguay and Uruguay experienced a record-breaking heat wave, with temperatures over 44 °C (111 °F) and with Argentina being the most affected country.^[132]
• During the second week of February 2022, multiple cities in California, including San Francisco, Sacramento, Los Angeles, and San Diego experienced a record-breaking heat wave with temperatures over 24 °C (75 °F) and with Palm Springs being the most affected city.
• Starting in late March 2022,
  India began experiencing one of the hottest March–April periods on record.^[133]
• A major heat wave affected the United States throughout May. Three residents in a senior building died on May 14 in Chicago due to the intense heat, because the AC wouldn't turn on. On May 19 in Memphis, as temperatures soared to near record highs of 33 °C (91 °F), a toddler died after being left in a car. On May 21, intense heat surged into the Mid-Atlantic, causing a near record hot Preakness Stakes, with Baltimore and Philadelphia hitting 35 °C (95 °F), and temperatures of 33 °C (92 °F) in Washington DC, and 32 °C (90 °F) in New York City.^{[citation needed]}
• During mid-June 2022, a record-breaking heat wave affected half of the United States. Record-high temperatures were set from California to Texas on June 13. On June 14, dangerous heat spread to the Midwest, South, and the Plains. On June 15, St. Louis reached a record-tying temperature of 38 °C (101 °F).
• In late June 2022,
  Japan saw the worst heatwave in 150 years.^[134]
• The
  2022 European heat waves affected much of Western Europe and the United Kingdom. Temperatures in Spain reached 45.7 °C (114.3 °F).^[135] The highest temperature recorded was 47.0 °C (116.6 °F) in Pinhão, Portugal, on 14 July.^[136] The United Kingdom saw the first red extreme heat warning to ever be issued in the country, causing it to be declared a national emergency on 15 July.^[137] A report from the Met Office suggests that temperatures may have reached 40.3 °C (104.5 °F) at Coningsby on 19 July, which is the first time the United Kingdom has exceeded 40 °C (104 °F).^{[138][needs update}
  ]
• China has suffered several heat waves in 2022.^[139]

2023

• During mid-April 2023,
  Indochina, and parts of China. In what has been described as the "worst April heatwave in Asian history", several cities in the region have reported record temperatures. In Luang Prabang, Laos, temperatures reached 42.7 °C (108.9 °F), the highest in Laos' recorded history, while neighboring Thailand reached a record-tying 44.6 °C (112.3 °F). At least 13 people died in Maharashtra state, India, as a result of heatstroke.^[142] In May, Vietnam recorded its highest ever temperature of 44.1 °C (111.4 °F).^[143]
• Starting in May 2023, a
  heat wave has affected the Pacific Northwest region of North America.^[144][145]
• Starting on July 10, 2023, a record-breaking
  Ancient Greek: Χάρων) is a psychopomp, the ferryman of Hades, the Greek underworld. ^[148]

• List of named heat waves
• List of cold waves
• List of Indian heat waves
• List of marine heatwaves
• List of severe weather phenomena

References