Average annual temperature is 24.2 °C
Absolute maximum temperature: 29.2 °C
Absolute minimum temperature: 19.4 °C
Number of sunny days: 35 days
Number of rainy days: 330 days
Look at detailed online map of Roinji
* Weather data for Roinji 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) | 28.6 | 28.0 | 28.6 | 28.4 | 28.5 | 28.3 | 28.9 | 28.7 | 29.1 | 28.9 | 29.2 | 28.9 |
| Average daytime temperature (°C) | 26.7 | 26.5 | 27.0 | 26.9 | 27.0 | 27.0 | 27.3 | 27.3 | 27.9 | 27.6 | 27.8 | 27.7 |
| Average temperature (°C) | 24.1 | 23.9 | 24.0 | 24.0 | 24.2 | 24.1 | 24.3 | 24.2 | 24.5 | 24.3 | 24.6 | 24.7 |
| Average night temperature (°C) | 21.8 | 21.9 | 21.4 | 21.4 | 21.8 | 21.2 | 21.3 | 21.3 | 21.4 | 21.6 | 21.6 | 22.1 |
| Absolute minimum temperature (°C) | 20.7 | 20.4 | 19.4 | 20.2 | 20.5 | 19.8 | 19.6 | 19.9 | 19.4 | 20.0 | 19.9 | 20.9 |
| 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) | 12.4 | 12.3 | 12.1 | 12.0 | 11.8 | 11.8 | 11.8 | 11.9 | 12.1 | 12.2 | 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 | 7.1 | 8.4 | 8.9 | 7.6 | 8.9 | 9.8 | 10.5 | 10.3 | 10.2 | 10.4 | 9.0 |
| Precipitation (mm) | 289 | 421 | 191 | 319 | 406 | 144 | 103 | 81 | 99 | 246 | 196 | 352 |
| Sunny days | 0 | 0 | 1 | 0 | 0 | 3 | 6 | 11 | 9 | 2 | 2 | 1 |
| Rainy days | 31 | 28 | 30 | 30 | 31 | 27 | 25 | 20 | 21 | 29 | 28 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Roinji is at