Average annual temperature is 26.1 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: 21.8 °C
Number of sunny days: 3 days
Number of rainy days: 362 days
Look at detailed online map of Isau
* Weather data for Isau 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) | 33.3 | 33.5 | 33.9 | 32.7 | 33.6 | 32.9 | 33.4 | 33.7 | 34.1 | 34.5 | 34.1 | 34.2 |
| Average daytime temperature (°C) | 30.7 | 30.7 | 31.0 | 29.6 | 30.5 | 30.4 | 31.0 | 31.1 | 31.1 | 31.5 | 31.5 | 30.8 |
| Average temperature (°C) | 26.0 | 25.8 | 25.9 | 25.5 | 26.2 | 25.9 | 26.1 | 26.1 | 26.1 | 26.5 | 26.6 | 26.3 |
| Average night temperature (°C) | 23.2 | 23.3 | 23.0 | 23.0 | 23.5 | 23.0 | 23.1 | 23.0 | 23.2 | 23.4 | 23.7 | 23.9 |
| Absolute minimum temperature (°C) | 22.3 | 22.7 | 22.3 | 22.0 | 22.7 | 22.1 | 21.8 | 22.1 | 22.2 | 22.7 | 22.8 | 23.2 |
| 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 | 11.9 | 11.9 | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.4 |
| 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) | 7.7 | 6.9 | 7.3 | 6.2 | 7.3 | 8.4 | 8.7 | 8.9 | 8.6 | 8.9 | 8.9 | 7.0 |
| Precipitation (mm) | 514 | 677 | 773 | 718 | 648 | 355 | 483 | 449 | 745 | 629 | 604 | 763 |
| Sunny days | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rainy days | 31 | 28 | 31 | 30 | 31 | 27 | 31 | 31 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Isau is at