Heat waves: some of the records broken this year in Canada

Canada’s summer heat waves continue this weekend, with warnings issued in four provinces.

Environment Canada says maximum temperatures on Sunday in southern Ontario, southern Quebec, New Brunswick and Nova Scotia could reach or exceed 30°C and potentially reach 40°C with humidity.

Heat warnings and high humidity have been a theme this year, with some provinces and territories reporting record high temperatures.

Here are some of the heat records recorded so far this year:


Along with a string of recent fires, British Columbia experienced record-breaking temperature days across the province in late July.

Preliminary data shows the province broke eight temperature records – decades old – on July 31.

Many of the records broken that day were in the interior region of British Columbia, with Osoyoos hitting 40°C on July 31, breaking the city’s 2003 record of 39.6°C.

Other municipalities that broke records for July 31 include Cache Creek (40.5 C), Cranbrook (37.6 C), Lillooet (39 C), Nelson (39.4 C), Penticton (39 C ), Summerland (38.7 C) and Trail (39.6 C).

Previously, preliminary data showed eight regions of the province recorded new temperature highs on July 29, including Cache Creek (41.2 C), Clinton (34.7 C), Kamloops (37.9 C), Lillooet (40.1C), Lytton (42.2C). ), Merritt (37.2 C), Nelson (38.6 C) and Trail (40 C).

Fourteen records were broken or tied on July 28, according to early data from Environment Canada, some dating back to the 1930s.

Lytton peaked at 41.1C on July 28, beating a record set in 2009 of 40.6. The day before, the village in British Columbia broke its 1939 record of 40°C after registering a temperature of 42°C.

The new records for Lytton come after temperatures of over 45°C were recorded in June 2021, the first time this has happened in Canada. The village would go on to set new Canadian all-time records that month, at one point registering a temperature of 49.6°C.

Osoyoos equaled its 1996 record of 41.2C for July 28 of this year.

Meanwhile, new records for this day were set in the Blue River (37 C), Clearwater (39.2 C), Clinton (34.5 C), Dawson Creek (32.5 C), Kelowna (38.7 C), Mackenzie (33.4 C), Penticton (37.9 C), Port Hardy (24.1 C), Princeton (38 C), Puntzi Mountain (34.2 C), Sparwood (33 ,1 C) and Vernon (37.8 C).

Ten records were broken or tied on July 27, including in Vancouver, which warmed to 30.4°C, surpassing its 1998 record of 29.9°C for that day.

Lytton reached 42°C that day, beating its 1939 record of 40°C for July 27.

The Bella Bella, Cache Creek, Clinton, Dawson Creek, Fort St. John, Mackenzie, Nelson and Puntzi Mountain areas also tied or beat their previous records.

More than a dozen temperature records, some dating back to the late 1800s, were also broken or equaled on July 26.

Abbotsford broke its previous temperature record of 33.6C set in 1998 after recording 35.4C on July 26.

Victoria broke her previous record of 30.5C, set in 2019, with a record high of 31.5C.

Agassiz, British Columbia, equaled its record of 35.6 C since 1899.

Other municipalities that tied or broke their July 26 records include Bella Bella (33.6°C), Cache Creek (37.5°C), Estevan Point (23.8°C), Gibsons (34, 4°C), Hope (37.9°C), Malahat (33.2°C). C), Port Alberni (37.7 C), Prince Rupert (25.8 C), Sechelt (34.4 C), Squamish (37.1 C) and White Rock (31 C).


Environment Canada has issued heat warnings in Alberta, Saskatchewan and Manitoba throughout the spring and summer.

On June 20, Manitoba broke 18 heat records, with the provincial capital Winnipeg recording a temperature of 37°C that day, beating the previous record set in 1888 of 33.3°C.

Coronach in southern Saskatchewan set a new heat record of 38.6°C on August 4, beating its previous record of 37.2°C from 1964.

This is in addition to the strong gusts of wind that the municipality experienced that day, with speeds of up to 94 kilometers per hour.


On May 31, the city of Toronto broke a decades-old heat record, recording a high of 32.1 C at Pearson International Airport, or 36 C with humidity.

The previous record, dating from 1944, was 31.1 C.

On June 21, the first day of summer, Windsor, Ontario recorded a temperature of 34.9°C at its local airport, breaking the previous record on that day of 34.4°C in 2012.

On March 6, the city of Ottawa experienced its highest temperature for that day at 12.9°C, breaking the previous record from 1974 of 9.4°C. The typical high for this time of year is closer to 0°C.

More record temperatures for Ottawa would come in May, with the city experiencing its hottest May 11 on record at 27°C, breaking the previous record of 26.8°C for that day in 2001.

The records continued on May 12, when the temperature reached 29.7°C and broke the previous record of 27.6°C set that day in 1992.

The following day, May 13, the temperature hit a record high of 29.8°C, surpassing the previous mark of 28.2°C set on that day in 1985.


The temperature in Montreal was expected to reach 31°C on May 12, which would have set a new record for that day.

Environment Canada figures show the temperature hit 30.3C, the hottest May 12 on record since at least 2013.

Prince Edward Island is also among the Atlantic provinces subject to extended heat warnings this weekend.

And on July 5, a heat wave broke records in the Yukon and the Northwest Territories.

Temperatures hovered around 30°C over large swaths of the territories, with records broken in regions above the Arctic Circle, including Inuvik, Northwest Territories. The temperature there reached 31.8°C, beating the previous record of 29.5°C set in 1998.

On July 4, Carmacks, located between Whitehorse and Dawson City, Yukon, reached 31.8°C, nearly three degrees warmer than a record set in 2021.

With files from CTV News and The Canadian Press

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