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Ottawa weather in August 2024
Expect 25°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Ottawa in August. Check more long-term weather averages for Ottawa in August before you book your next holiday to Ontario in 2024/2025.
- 2525°C max day temperature
- 1111 days with some rainfall
- 1414°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 8686 mm of monthly rainfall
- 77 (High) UV index
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Ottawa by month
Recommended for Ontario
The August weather guide for Ontario (Ottawa) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Canada
How hot is it in Ottawa in August?
Daytime temperatures usually reach 25°C in Ottawa in August with no heat and humidity, falling to 14°C at night.
How sunny is it in Ottawa in August?
There are normally 8 hours of bright sunshine each day in Ottawa in August - that's 55% of daylight hours.
Does it rain in Ottawa in August?
There are usually 11 days with some rain in Ottawa in August and the average monthly rainfall is 86mm.
Ottawa August sunrise & sunset times
Browse the sunrise and sunset times for Ottawa in August 2024. Select a month to view Ottawa sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Thursday, 1st August 2024||05:48||20:30|
|Friday, 16th August 2024||06:05||20:07|
|Saturday, 31st August 2024||06:24||19:41|
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