Average annual temperature is 13.3 °C
Absolute maximum temperature: 28.5 °C
Absolute minimum temperature: 0.1 °C
Number of sunny days: 145 days
Number of rainy days: 220 days
Look at detailed online map of Blenheim
* Weather data for Blenheim New Zealand is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 28.5 | 28.4 | 27.6 | 22.9 | 21.2 | 17.5 | 17.2 | 16.6 | 21.3 | 22.7 | 26.7 | 28.0 |
| Average daytime temperature (°C) | 21.6 | 22.0 | 21.3 | 18.4 | 16.4 | 13.7 | 13.3 | 12.8 | 15.8 | 18.1 | 19.8 | 22.5 |
| Average temperature (°C) | 17.5 | 17.8 | 16.0 | 14.3 | 12.7 | 9.7 | 8.8 | 7.8 | 11.7 | 12.7 | 14.3 | 17.0 |
| Average night temperature (°C) | 14.4 | 14.4 | 12.5 | 11.3 | 9.9 | 6.9 | 5.4 | 4.1 | 8.4 | 9.1 | 10.4 | 13.4 |
| Absolute minimum temperature (°C) | 11.4 | 10.7 | 5.5 | 5.7 | 4.3 | 2.6 | 1.2 | 0.1 | 3.6 | 3.0 | 4.6 | 8.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 |
| Daylight mean duration (h) | 14.8 | 13.7 | 12.4 | 11.0 | 9.8 | 9.2 | 9.5 | 10.5 | 11.8 | 13.2 | 14.5 | 15.1 |
| Daylight minimum duration (h) | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 9.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 9.5 | 9.5 | 9.6 | 7.5 | 5.9 | 6.2 | 7.1 | 8.6 | 7.9 | 10.7 | 11.0 | 10.6 |
| Precipitation (mm) | 45 | 75 | 99 | 62 | 116 | 74 | 37 | 25 | 76 | 43 | 49 | 43 |
| Sunny days | 9 | 8 | 13 | 8 | 12 | 14 | 17 | 19 | 9 | 11 | 12 | 13 |
| Rainy days | 22 | 20 | 18 | 22 | 19 | 16 | 14 | 12 | 21 | 20 | 18 | 18 |
| Snow days | 0 | 0 | 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