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Ottawa weather in August 2021
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- 25°C max day temperature
25 - 8 hours of sunshine per day
- 11 days with some rainfall
11 - 14°C min night temperature
14 - 14 hours of daylight per day
14 - No heat & humidity
0 - 86 mm of monthly rainfall
86 - 7 (High) UV index
7
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
The August weather guide for Ottawa, Ontario 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.
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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 sunrise & sunset times for August 2021
Browse the sunrise & sunset times for Ottawa in August 2021. Select a month to view Ottawa sunrise & sunset times for the next twelve months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Sunday, 1st August 2021 | 05:47 | 20:30 |
| Monday, 16th August 2021 | 06:05 | 20:08 |
| Tuesday, 31st August 2021 | 06:23 | 19:42 |
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Metric (°C / mm) | Imperial (°F / inches)
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Where is hot in Ontario in August for 2021/2022?
Below are average maximum temperatures at popular destinations in Ontario in August. Select a destination to see more weather parameters.
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