Average annual temperature is 19.7 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 4.2 °C
Number of sunny days: 202 days
Number of rainy days: 163 days
Look at detailed online map of Blenheim
* Weather data for Blenheim Australia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 37.2 | 37.7 | 36.2 | 29.7 | 26.0 | 26.7 | 26.0 | 27.3 | 33.2 | 35.5 | 36.5 | 36.7 |
| Average daytime temperature (°C) | 31.0 | 30.8 | 30.7 | 25.5 | 22.1 | 21.2 | 20.9 | 23.3 | 25.7 | 28.7 | 28.2 | 31.9 |
| Average temperature (°C) | 24.0 | 24.1 | 24.1 | 19.4 | 15.1 | 14.6 | 14.2 | 16.0 | 18.0 | 20.8 | 21.5 | 24.9 |
| Average night temperature (°C) | 18.9 | 19.0 | 19.4 | 14.1 | 9.6 | 9.3 | 8.8 | 9.7 | 11.7 | 14.1 | 16.9 | 19.4 |
| Absolute minimum temperature (°C) | 16.4 | 16.1 | 14.5 | 10.2 | 5.5 | 4.2 | 5.0 | 7.3 | 8.4 | 10.4 | 13.3 | 14.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.7 | 13.0 | 12.2 | 11.4 | 10.8 | 10.4 | 10.6 | 11.2 | 11.9 | 12.8 | 13.5 | 13.9 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 10.3 | 10.7 | 8.8 | 9.8 | 9.1 | 8.9 | 8.5 | 9.8 | 10.3 | 11.5 | 9.6 | 11.0 |
| Precipitation (mm) | 78 | 69 | 111 | 43 | 70 | 5 | 20 | 17 | 36 | 11 | 139 | 132 |
| Sunny days | 9 | 9 | 10 | 21 | 24 | 24 | 26 | 18 | 19 | 25 | 6 | 11 |
| Rainy days | 22 | 19 | 21 | 9 | 7 | 6 | 5 | 13 | 11 | 6 | 24 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Blenheim is at