Average annual temperature is 14.8 °C
Absolute maximum temperature: 21.4 °C
Absolute minimum temperature: 7.6 °C
Number of sunny days: 20 days
Number of rainy days: 345 days
Look at detailed online map of Mahdemu
* Weather data for Mahdemu 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) | 20.1 | 20.1 | 21.4 | 19.6 | 20.1 | 19.7 | 20.8 | 20.1 | 20.0 | 20.9 | 21.1 | 21.3 |
| Average daytime temperature (°C) | 18.2 | 18.3 | 18.7 | 18.3 | 18.6 | 18.3 | 18.5 | 18.5 | 18.5 | 19.0 | 19.3 | 19.6 |
| Average temperature (°C) | 14.8 | 15.0 | 14.8 | 14.7 | 15.1 | 14.4 | 14.6 | 14.5 | 14.7 | 14.7 | 15.1 | 15.6 |
| Average night temperature (°C) | 11.9 | 12.7 | 11.7 | 11.5 | 12.4 | 10.9 | 11.5 | 11.5 | 11.5 | 11.4 | 11.5 | 12.7 |
| Absolute minimum temperature (°C) | 9.4 | 10.4 | 7.8 | 9.0 | 10.0 | 7.7 | 7.7 | 7.6 | 7.8 | 7.7 | 7.9 | 8.9 |
| 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) | 7.5 | 5.0 | 7.8 | 7.7 | 5.9 | 8.2 | 7.9 | 8.2 | 8.3 | 8.3 | 8.9 | 7.3 |
| Precipitation (mm) | 284 | 441 | 274 | 228 | 305 | 212 | 191 | 195 | 259 | 297 | 259 | 456 |
| Sunny days | 1 | 0 | 2 | 1 | 0 | 2 | 3 | 2 | 2 | 2 | 5 | 0 |
| Rainy days | 30 | 28 | 29 | 29 | 31 | 28 | 28 | 29 | 28 | 29 | 25 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mahdemu is at