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The best time to visit Ottawa
February, May, June, September and October — daytime highs -2–24°C. Every number on this page is measured, not guessed.
Ottawa month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | -4°C | -12°C | 11 | Shoulder |
| February | -2°C | -12°C | 13 | Best |
| March | 4°C | -6°C | 11 | Shoulder |
| April | 13°C | 1°C | 12 | Shoulder |
| May | 20°C | 7°C | 9 | Best |
| June | 24°C | 14°C | 14 | Best |
| July | 26°C | 17°C | 14 | |
| August | 26°C | 17°C | 13 | |
| September | 21°C | 13°C | 9 | Best |
| October | 16°C | 8°C | 12 | Best |
| November | 6°C | 0°C | 10 | Shoulder |
| December | 2°C | -5°C | 14 |
The short version
Warmest: July, around 26°C by day. Coolest: January, around -4°C by day and -12°C at night. Wettest: June with about 14 wet days. Driest: May with about 9.
If you want fewer people: January, March, April, November sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Ottawa?
The best months are February, May, June, September and October, when daytime highs sit -2–24°C.
What is the hottest month in Ottawa?
July, with daytime highs around 26°C.
What is the wettest month in Ottawa?
June, with about 14 wet days. The driest is May with about 9.
When is the cheapest time to visit Ottawa?
Prices follow the weather. The months either side of the best ones — January, March, April, November — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Ottawa, Ontario. Source: Open-Meteo.