Canada, experiences maximum daytime temperatures in August ranging from 5°C (41°F) in Cape Dyer to 30°C (86°F) in Osoyoos. Nighttime temperatures generally drop to 14°C (57°F) in Osoyoos and 1°C (34°F) in Cape Dyer. August is a summer month.
To get a sense of August's typical temperatures in the key spots of Canada, explore the map below. Click on a point for an in-depth look.
Pick a month to see the average temperature, rainfall and sunshine in Canada - and find the best time to visit. See also: Canada weather by month.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Canada.
Marker color shows the average daytime high temperature in August: blue is cold, red is hot.
Daytime temperatures in Toronto typically peak at 26°C (79°F) in August, putting it in the high range.
Nighttime temperatures in Toronto typically drop to around 18°C (64°F) in August.
Based on our systematic data collection, Osoyoos has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 30°C (86°F), while at night it goes down to an approximate temperature of 14°C (57°F).
When looking through our records, we find that Cape Dyer stands out as the coolest city in Canada for the month of August. Daytime highs average 5°C (41°F) and it cools down to about 1°C (34°F) at night.
Across Canada, sunshine in August ranges from overcast in Clyde (89 hours) to sunny in Victoria (300 hours).
Across Canada, sea temperatures in August range from cold at 14°C (57°F) in Prince Rupert to good at 21°C (70°F) in Montréal, so swimming conditions depend on which coast you pick.
We have much more information about the climate in Canada.
Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.
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