Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
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 excellent 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 excellent 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.
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
Ontario Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ontario - and find the best time to visit.
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
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Ontario 3-Day Forecast
More climate data for Ontario
See the full Ontario climate overview or explore weather in the United States of America.
Popular in August
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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