Average annual temperature is 11.5 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -14.3 °C
Number of sunny days: 164 days
Number of rainy days: 195 days
Number of snow days: 6 days
Look at detailed online map of Ottawa
* Weather data for Ottawa United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.9 | 18.5 | 17.2 | 29.4 | 31.4 | 32.5 | 34.6 | 31.2 | 33.4 | 26.8 | 19.2 | 12.5 |
| Average daytime temperature (°C) | 6.3 | 8.4 | 9.4 | 18.6 | 22.0 | 25.6 | 29.5 | 27.1 | 24.1 | 18.1 | 9.7 | 7.4 |
| Average temperature (°C) | 2.6 | 2.0 | 3.3 | 11.5 | 14.4 | 19.4 | 23.5 | 21.5 | 18.4 | 12.8 | 4.3 | 3.2 |
| Average night temperature (°C) | -0.6 | -3.0 | -1.5 | 5.3 | 6.9 | 13.5 | 18.2 | 16.6 | 13.5 | 8.3 | -0.1 | -0.3 |
| Absolute minimum temperature (°C) | -5.5 | -14.3 | -6.3 | -2.4 | 0.1 | 7.5 | 14.2 | 11.0 | 7.1 | 0.4 | -5.7 | -5.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.3 | 6.8 | 6.9 | 8.7 | 11.7 | 11.0 | 11.9 | 10.6 | 8.9 | 7.5 | 7.2 | 3.6 |
| Precipitation (mm) | 92 | 42 | 99 | 132 | 23 | 82 | 141 | 171 | 128 | 87 | 60 | 112 |
| Sunny days | 11 | 13 | 10 | 14 | 22 | 12 | 9 | 9 | 15 | 16 | 20 | 13 |
| Rainy days | 19 | 13 | 21 | 16 | 9 | 18 | 22 | 22 | 15 | 15 | 9 | 16 |
| Snow days | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Ottawa during the most sunny months:
The largest precipitation sum in Ottawa is at