When to go · Ottawa, Canada
Best Time to Visit Ottawa
The sweet spot for Ottawa is May, September and August. Here's every month's temperature and rain so you can plan around your own dates.
Go now
May, September, August
Comfortable and drier
Shoulder
June, July, October
Fewer crowds, a trade-off
Think twice
December, March
Hottest is August (26°C)
Ottawa weather, month by month
| Month | High | Low | Rain | Feel |
|---|---|---|---|---|
| Jan | -4°C / 25°F | -13°C / 9°F | 69mm | cold, some rain |
| Feb | -2°C / 28°F | -13°C / 9°F | 75mm | cold, some rain |
| Mar | 4°C / 39°F | -6°C / 21°F | 77mm | cold, some rain |
| Apr | 12°C / 54°F | 1°C / 34°F | 102mm | cool, some rain |
| MayBEST | 20°C / 68°F | 7°C / 45°F | 71mm | mild, some rain |
| Jun | 24°C / 75°F | 14°C / 57°F | 126mm | warm, wet |
| Jul | 26°C / 79°F | 17°C / 63°F | 129mm | warm, wet |
| AugBEST | 26°C / 79°F | 17°C / 63°F | 107mm | warm, some rain |
| SepBEST | 21°C / 70°F | 13°C / 55°F | 87mm | mild, some rain |
| Oct | 15°C / 59°F | 8°C / 46°F | 87mm | cool, some rain |
| Nov | 6°C / 43°F | -1°C / 30°F | 64mm | cold, some rain |
| Dec | 1°C / 34°F | -5°C / 23°F | 102mm | cold, some rain |
Averages from Open-Meteo ERA5 climate reanalysis, 2019 to 2023. Highs and lows are daily averages for each month; rain is the monthly total. Tap a month for a detailed guide.
Want the timing decided for you? A Local Friend in Ottawa plans around the seasons for you.