Average annual temperature is 15.2 °C
Absolute maximum temperature: 25.7 °C
Absolute minimum temperature: 3.9 °C
Number of sunny days: 36 days
Number of rainy days: 329 days
Look at detailed online map of Swanson
* Weather data for Swanson 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) | 25.0 | 25.7 | 23.4 | 22.6 | 21.1 | 17.3 | 15.6 | 15.9 | 21.4 | 20.7 | 21.5 | 25.0 |
| Average daytime temperature (°C) | 21.8 | 21.8 | 20.6 | 19.7 | 17.6 | 14.7 | 14.0 | 13.6 | 16.2 | 17.2 | 18.4 | 21.4 |
| Average temperature (°C) | 19.1 | 18.8 | 17.4 | 16.9 | 15.2 | 12.1 | 11.9 | 10.2 | 13.3 | 14.2 | 15.2 | 18.1 |
| Average night temperature (°C) | 17.1 | 16.5 | 14.6 | 15.0 | 13.7 | 10.3 | 10.0 | 7.7 | 11.3 | 11.9 | 12.4 | 15.6 |
| Absolute minimum temperature (°C) | 14.2 | 13.3 | 9.4 | 8.7 | 8.1 | 6.3 | 5.6 | 3.9 | 9.3 | 4.5 | 8.7 | 9.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.3 | 13.4 | 12.3 | 11.1 | 10.2 | 9.7 | 9.9 | 10.7 | 11.9 | 13.0 | 14.1 | 14.6 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 8.5 | 9.5 | 10.1 | 7.3 | 6.6 | 7.0 | 7.5 | 8.1 | 9.0 | 9.2 | 11.3 | 10.3 |
| Precipitation (mm) | 325 | 272 | 95 | 140 | 220 | 135 | 148 | 82 | 172 | 126 | 100 | 142 |
| Sunny days | 1 | 0 | 8 | 2 | 3 | 5 | 0 | 2 | 3 | 3 | 5 | 4 |
| Rainy days | 30 | 28 | 23 | 28 | 28 | 25 | 31 | 29 | 27 | 28 | 25 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Swanson during the most sunny months:
The largest precipitation sum in Swanson is at