Average annual temperature is 22.5 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: 6.8 °C
Number of sunny days: 207 days
Number of rainy days: 158 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) | 33.6 | 33.2 | 33.0 | 33.9 | 29.6 | 29.1 | 26.7 | 28.7 | 33.4 | 36.5 | 37.8 | 34.9 |
| Average daytime temperature (°C) | 30.3 | 29.8 | 31.4 | 29.7 | 25.6 | 26.6 | 23.4 | 25.4 | 28.6 | 32.1 | 32.7 | 31.7 |
| Average temperature (°C) | 25.0 | 25.0 | 25.6 | 23.6 | 18.9 | 19.9 | 18.0 | 18.2 | 21.0 | 23.7 | 25.3 | 26.0 |
| Average night temperature (°C) | 20.6 | 21.0 | 20.8 | 18.9 | 13.4 | 14.3 | 13.7 | 12.3 | 14.4 | 17.1 | 19.6 | 21.6 |
| Absolute minimum temperature (°C) | 18.2 | 15.8 | 15.8 | 15.2 | 7.9 | 10.3 | 9.1 | 6.8 | 10.9 | 13.4 | 15.7 | 17.4 |
| 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 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.2 | 12.8 | 12.2 | 11.6 | 11.1 | 10.9 | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 9.7 | 8.7 | 10.5 | 9.7 | 9.9 | 9.6 | 8.7 | 10.2 | 10.9 | 11.6 | 10.8 | 10.5 |
| Precipitation (mm) | 496 | 83 | 39 | 54 | 4 | 3 | 83 | 0 | 1 | 4 | 58 | 111 |
| Sunny days | 8 | 9 | 11 | 17 | 22 | 20 | 18 | 27 | 28 | 25 | 14 | 8 |
| Rainy days | 23 | 19 | 20 | 13 | 9 | 10 | 13 | 4 | 2 | 6 | 16 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Blenheim is at