August weather forecast
Canada

August is the last full month of summer in Canada and it continues to offer a variety of weather conditions, depending on the region. Warm temperatures, coupled with an occasional rainfall, mark the impending end of the summer season.

In the northern territories, including Nunavut and Yukon, temperatures typically range from 10°C (50°F) to 20°C (68°F), which is slightly cooler compared to July. The daylight hours also begin to diminish, though still plentiful for outdoor activities.

In the west coast cities, such as Vancouver and Victoria, the mild weather continues, with temperatures usually between 15°C (59°F) and 25°C (77°F). The rainfall tends to remain low, making it a favorable period for exploring outdoor activities.

In the Prairie provinces, encompassing cities like Calgary and Winnipeg, the temperatures during the day can vary between 15°C (59°F) and 30°C (86°F). While August remains generally dry, occasional thunderstorms can occur, particularly in the southern part of this region.

In Atlantic Canada, including Halifax and St. John's, temperatures remain pleasant, typically ranging from 15°C (59°F) to 25°C (77°F). Foggy conditions can persist due to the influence of the cold Labrador Current, but sunny days are still prevalent.

Snowfall in August is quite uncommon, with only the highest points of the Rocky Mountains occasionally experiencing a dusting of snow. As the month progresses, early signs of autumn, such as leaves starting to change colors, may become visible in the northern and higher altitude regions of the country.

Compared to July, August is a bit cooler, particularly towards the end of the month. Although the daytime temperatures remain high, the evenings tend to become cooler. Occasional precipitation serves as a reminder of the approaching fall season. Nevertheless, August is a time when Canadians continue to embrace the outdoors, whether it be through camping, hiking, or participating in various festivals across the country.

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• Toronto - August »
  With an average sea temperature of 22.3°C (72.1°F), August is the month with the warmest seawater in Toronto. The months with the highest UV index in Toronto are July and August, with an average maximum UV index of 6.
• Montreal - August »
  In Montreal in August, it is raining for 16.8 days, with typically 78mm (3.07") of accumulated precipitation. In Montreal, during August, the rain falls for 16.8 days and regularly aggregates up to 78mm (3.07") of precipitation.
• Vancouver - August »
  August and September, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Vancouver, Canada. August and September, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Vancouver.
• Ottawa - August »
  The months with the highest UV index in Ottawa are June through August, with an average maximum UV index of 5. On the first day of August in Ottawa, sunrise is at 5:46 am and sunset at 8:31 pm.
• Calgary - August »
  In Calgary, Canada, in August, it is raining for 10.3 days, with typically 23mm (0.91") of accumulated precipitation. August, marked by an average high-temperature of 22.9°C (73.2°F) and a low-temperature of 9.8°C (49.6°F), is the warmest month in Calgary.
• Edmonton - August »
  On the last day of August, in Edmonton sunrise is at 6:41 am and sunset at 8:26 pm MDT. In Edmonton, during August, the rain falls for 13.6 days and regularly aggregates up to 37mm (1.46") of precipitation.
• Winnipeg - August »
  The months with the lowest humidity in Winnipeg are May and August, with an average relative humidity of 63%. August is the month when Winnipeg's temperatures reach their peak, with averages of 25.6°C (78.1°F) and lows of 14.3°C (57.7°F).
• Quebec city - August »
  August is the month with the warmest seawater in Quebec city, with an average sea temperature of 14.1°C (57.4°F). August brings an average high-temperature of a still warm 24°C (75.2°F) in Quebec city, Canada, showing a slight difference from July's 25°C (77°F).
• Hamilton - August »
  With an average sea temperature of 23.4°C (74.1°F), August is the month with the warmest seawater in Hamilton. On the first day of August in Hamilton sunrise is at 6:09 am and sunset at 8:41 pm.
• Kitchener - August »
  In Kitchener in August, during 17.2 rainfall days, 58mm (2.28") of precipitation is typically accumulated. May through August, with an average maximum UV index of 5, are months with the highest UV index in Kitchener, Canada.
• London - August »
  On the first day of August in London sunrise is at 6:15 am and sunset at 8:46 pm. In London during August, the rain falls for 13 days and regularly aggregates up to 29mm (1.14") of precipitation.
• Victoria - August »
  The months with the least rainfall in Victoria are July and August Rain falls for 2.3 days and accumulates 3mm (0.12") of rain. August and September, with an average sea temperature of 11.5°C (52.7°F), are months with the warmest seawater in Victoria, Canada.