Average annual temperature is 22.9 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: 13.0 °C
Number of sunny days: 34 days
Number of rainy days: 331 days
Look at detailed online map of Siapan
* Weather data for Siapan 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) | 31.6 | 30.9 | 31.8 | 31.5 | 31.6 | 30.3 | 30.3 | 31.3 | 32.0 | 32.3 | 33.8 | 32.9 |
| Average daytime temperature (°C) | 28.8 | 28.8 | 28.9 | 29.1 | 27.9 | 27.8 | 28.0 | 28.5 | 28.8 | 29.2 | 30.4 | 30.4 |
| Average temperature (°C) | 23.2 | 22.9 | 22.8 | 22.7 | 22.8 | 22.3 | 22.2 | 22.7 | 22.6 | 23.0 | 23.5 | 23.8 |
| Average night temperature (°C) | 19.3 | 19.1 | 18.5 | 18.5 | 19.2 | 18.1 | 17.7 | 18.8 | 18.1 | 18.5 | 18.4 | 19.1 |
| Absolute minimum temperature (°C) | 16.7 | 16.8 | 15.6 | 15.7 | 17.4 | 14.5 | 13.0 | 13.2 | 15.1 | 14.5 | 14.2 | 16.8 |
| 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 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.5 | 12.3 | 12.1 | 11.9 | 11.8 | 11.7 | 11.7 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 8.3 | 7.8 | 9.0 | 9.1 | 7.3 | 8.7 | 8.8 | 9.7 | 9.3 | 9.4 | 10.4 | 10.1 |
| Precipitation (mm) | 97 | 195 | 194 | 290 | 246 | 185 | 175 | 171 | 174 | 371 | 121 | 180 |
| Sunny days | 3 | 3 | 2 | 2 | 1 | 2 | 4 | 3 | 2 | 2 | 5 | 5 |
| Rainy days | 28 | 25 | 29 | 28 | 30 | 28 | 27 | 28 | 28 | 29 | 25 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siapan is at