Average annual temperature is 14.2 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -10.1 °C
Number of sunny days: 187 days
Number of rainy days: 176 days
Number of snow days: 2 days
Look at detailed online map of Blenheim
* Weather data for Blenheim 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) | 18.3 | 19.7 | 19.1 | 29.3 | 29.3 | 34.5 | 36.0 | 33.7 | 36.6 | 28.5 | 20.5 | 16.6 |
| Average daytime temperature (°C) | 10.0 | 10.4 | 12.2 | 20.4 | 22.5 | 27.5 | 31.8 | 29.9 | 26.3 | 20.9 | 12.8 | 10.1 |
| Average temperature (°C) | 5.9 | 5.4 | 6.5 | 14.3 | 16.3 | 21.2 | 26.0 | 24.6 | 21.1 | 15.4 | 7.6 | 6.0 |
| Average night temperature (°C) | 2.4 | 1.0 | 1.6 | 9.3 | 10.6 | 15.8 | 21.1 | 19.9 | 16.8 | 10.9 | 3.1 | 2.3 |
| Absolute minimum temperature (°C) | -4.0 | -10.1 | -3.8 | 0.3 | 4.8 | 10.9 | 16.8 | 15.8 | 11.5 | 4.7 | -4.8 | -4.0 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 4.6 | 7.0 | 7.4 | 9.2 | 11.5 | 10.7 | 11.6 | 10.3 | 8.3 | 8.5 | 7.7 | 5.1 |
| Precipitation (mm) | 109 | 58 | 80 | 148 | 49 | 92 | 108 | 88 | 143 | 32 | 62 | 181 |
| Sunny days | 13 | 16 | 14 | 16 | 23 | 13 | 7 | 13 | 15 | 17 | 22 | 18 |
| Rainy days | 18 | 10 | 17 | 14 | 8 | 17 | 24 | 18 | 15 | 14 | 8 | 13 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Blenheim during the most sunny months:
The largest precipitation sum in Blenheim is at