Average annual temperature is 23.3 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: 12.3 °C
Number of sunny days: 118 days
Number of rainy days: 247 days
Look at detailed online map of Koumac
* Weather data for Koumac New Caledonia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.0 | 32.0 | 30.9 | 30.8 | 29.9 | 27.3 | 27.3 | 26.5 | 27.7 | 29.4 | 29.0 | 31.9 |
| Average daytime temperature (°C) | 28.8 | 29.2 | 29.3 | 28.0 | 25.8 | 25.1 | 24.9 | 24.2 | 25.1 | 26.5 | 27.4 | 30.3 |
| Average temperature (°C) | 25.6 | 25.8 | 25.9 | 24.8 | 22.8 | 21.1 | 20.6 | 19.9 | 21.3 | 22.6 | 23.5 | 26.1 |
| Average night temperature (°C) | 23.0 | 23.0 | 23.3 | 22.2 | 20.2 | 17.5 | 16.9 | 15.8 | 18.4 | 19.4 | 19.5 | 22.4 |
| Absolute minimum temperature (°C) | 19.6 | 19.9 | 21.0 | 19.1 | 16.2 | 13.5 | 12.9 | 12.3 | 14.9 | 16.7 | 16.3 | 20.5 |
| 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) | 9.8 | 10.1 | 10.5 | 9.0 | 8.1 | 9.9 | 9.2 | 9.9 | 9.6 | 10.1 | 11.2 | 11.1 |
| Precipitation (mm) | 331 | 227 | 195 | 141 | 51 | 4 | 19 | 57 | 112 | 114 | 11 | 72 |
| Sunny days | 2 | 1 | 0 | 6 | 12 | 21 | 17 | 17 | 6 | 8 | 19 | 9 |
| Rainy days | 29 | 27 | 31 | 24 | 19 | 9 | 14 | 14 | 24 | 23 | 11 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koumac is at