Average annual temperature is 10.3 °C
Absolute maximum temperature: 31.4 °C
Absolute minimum temperature: -18.7 °C
Number of sunny days: 159 days
Number of rainy days: 185 days
Number of snow days: 21 days
Look at detailed online map of Blenheim
* Weather data for Blenheim Canada is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 9.6 | 13.6 | 12.4 | 22.2 | 27.4 | 31.4 | 29.3 | 27.0 | 28.8 | 24.3 | 14.7 | 12.7 |
| Average daytime temperature (°C) | 3.0 | 4.9 | 5.4 | 12.6 | 18.5 | 23.2 | 25.6 | 23.8 | 21.7 | 15.5 | 8.6 | 6.3 |
| Average temperature (°C) | 0.2 | -0.2 | 1.5 | 8.2 | 13.2 | 18.8 | 21.8 | 20.0 | 18.3 | 12.3 | 5.0 | 3.8 |
| Average night temperature (°C) | -2.2 | -3.8 | -1.5 | 4.0 | 8.4 | 14.5 | 18.0 | 16.5 | 15.1 | 9.4 | 1.4 | 1.6 |
| Absolute minimum temperature (°C) | -17.4 | -18.7 | -6.2 | -4.8 | 2.0 | 9.6 | 13.0 | 9.8 | 9.2 | -2.5 | -6.4 | -4.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.1 | 6.8 | 6.6 | 8.7 | 11.3 | 12.2 | 12.0 | 10.5 | 9.7 | 5.8 | 6.1 | 3.9 |
| Precipitation (mm) | 99 | 83 | 91 | 115 | 30 | 68 | 99 | 64 | 15 | 67 | 50 | 57 |
| Sunny days | 10 | 14 | 8 | 12 | 25 | 16 | 6 | 12 | 15 | 13 | 16 | 12 |
| Rainy days | 14 | 12 | 16 | 17 | 6 | 14 | 25 | 19 | 15 | 18 | 11 | 18 |
| Snow days | 7 | 2 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 |
The best time to visit Blenheim during the most sunny months:
The largest precipitation sum in Blenheim is at