Ontario Weather in August
With daytime temperatures of 33°C (91°F) and nighttime lows of 14°C (57°F), August in Ontario brings very high temperatures during the day. The perfect weather makes it an appealing time to visit.
Rainfall in Ontario in August
Analyzing past climate data, one can expect approximately 2 days of rain, averaging 5.7 mm (0.2 in). Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.
Temperature in Ontario in August
Ontario has perfect weather in August, with days reaching 33°C (91°F) and nights cooling to 14°C (57°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.Should you favor a climate that's both dry and comfortably warm, April, May, June, September and October typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ontario's climate page.
Ontario Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
33°C (91°F)
Chance of Rain
7%
Precipitation
5.7 mm (0.2 in)
Rainy days
2 days
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Ontario in August
Pack for serious heat in Ontario in August. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. Dry conditions mean you won't need to worry about rain protection.What To Do in Ontario in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ontario's climate page.
See the full Ontario climate overview or explore weather in the United States of America.
