Ottawa Weather in August
26°C high · 14.5°C low · 89 mm rain · 8.1h sun
Yes — Aug is one of the best months to visit Ottawa, with mild weather and 8.1h of daily sunshine.
August at a glance
| Metric | Value |
|---|---|
| Average high | 26°C |
| Average low | 14.5°C |
| Rainfall | 89 mm |
| Sunshine | 8.1 hours/day |
| Daylight | 13.9 hours |
What to pack in August
Pack comfortable clothes with a light layer for evenings for Ottawa in August.
Ottawa weather by month
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Frequently asked questions
What is the weather in Ottawa in August?
Highs of 26°C and lows of 14.5°C, with about 89 mm of rain and 8.1 hours of sunshine per day.
Is August a good time to visit Ottawa?
Yes — Aug is one of the best months to visit Ottawa, with mild weather and 8.1h of daily sunshine.
What to do in Ottawa · Best time to visit Ottawa
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.