Average annual temperature is 26.0 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: 21.6 °C
Number of sunny days: 12 days
Number of rainy days: 353 days
Look at detailed online map of Iwaia
* Weather data for Iwaia 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) | 30.9 | 30.4 | 30.7 | 29.8 | 30.2 | 29.3 | 30.4 | 29.8 | 30.3 | 30.2 | 30.7 | 31.1 |
| Average daytime temperature (°C) | 28.9 | 29.1 | 29.0 | 29.0 | 28.4 | 28.0 | 28.5 | 28.3 | 28.5 | 29.0 | 29.2 | 29.9 |
| Average temperature (°C) | 26.3 | 26.3 | 26.3 | 26.1 | 25.9 | 25.7 | 25.7 | 25.7 | 25.6 | 25.9 | 26.2 | 26.6 |
| Average night temperature (°C) | 24.2 | 24.2 | 24.1 | 24.0 | 24.1 | 23.8 | 23.4 | 23.3 | 23.1 | 23.5 | 23.8 | 24.1 |
| Absolute minimum temperature (°C) | 23.1 | 23.0 | 23.3 | 23.0 | 22.8 | 22.6 | 22.5 | 22.1 | 21.6 | 22.6 | 22.9 | 22.6 |
| 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 | 12.4 | 12.1 | 11.9 | 11.7 | 11.7 | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 |
| 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 | 8.2 | 8.8 | 9.1 | 6.7 | 7.6 | 9.4 | 10.2 | 9.9 | 10.2 | 10.5 | 10.6 |
| Precipitation (mm) | 309 | 282 | 274 | 296 | 407 | 273 | 167 | 91 | 118 | 240 | 173 | 217 |
| Sunny days | 0 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 3 | 0 | 0 | 2 |
| Rainy days | 31 | 28 | 29 | 30 | 31 | 27 | 31 | 29 | 27 | 31 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iwaia is at