Average annual temperature is 23.1 °C
Absolute maximum temperature: 30.9 °C
Absolute minimum temperature: 19.2 °C
Number of sunny days: 7 days
Number of rainy days: 358 days
Look at detailed online map of Sumul
* Weather data for Sumul Papua New Guinea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.3 | 29.9 | 30.2 | 30.4 | 30.8 | 29.0 | 29.6 | 29.8 | 30.0 | 30.9 | 29.8 | 30.0 |
| Average daytime temperature (°C) | 27.2 | 26.8 | 27.9 | 26.6 | 27.1 | 26.8 | 27.1 | 27.9 | 27.7 | 27.8 | 28.1 | 27.3 |
| Average temperature (°C) | 23.0 | 22.9 | 23.2 | 22.8 | 23.3 | 23.0 | 23.0 | 23.1 | 23.3 | 23.2 | 23.5 | 23.2 |
| Average night temperature (°C) | 20.5 | 20.6 | 20.5 | 20.6 | 21.0 | 20.8 | 20.7 | 20.3 | 20.7 | 20.5 | 20.8 | 20.9 |
| Absolute minimum temperature (°C) | 19.8 | 20.0 | 19.6 | 19.7 | 20.3 | 20.0 | 19.5 | 19.2 | 19.4 | 19.7 | 19.8 | 20.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.3 | 12.2 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.3 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 7.1 | 5.7 | 7.9 | 5.7 | 7.0 | 7.3 | 8.0 | 9.3 | 8.6 | 8.1 | 8.6 | 6.9 |
| Precipitation (mm) | 225 | 320 | 227 | 312 | 299 | 158 | 193 | 191 | 138 | 219 | 276 | 475 |
| Sunny days | 0 | 0 | 0 | 0 | 2 | 2 | 3 | 0 | 0 | 0 | 0 | 0 |
| Rainy days | 31 | 28 | 31 | 30 | 29 | 28 | 28 | 31 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sumul is at