Average annual temperature is 14.2 °C
Absolute maximum temperature: 22.5 °C
Absolute minimum temperature: 6.5 °C
Number of sunny days: 13 days
Number of rainy days: 352 days
Look at detailed online map of Iak
* Weather data for Iak 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) | 21.5 | 21.3 | 21.3 | 20.7 | 21.6 | 21.2 | 21.2 | 21.2 | 21.9 | 21.1 | 21.6 | 22.5 |
| Average daytime temperature (°C) | 19.4 | 18.9 | 19.3 | 19.1 | 19.1 | 19.3 | 19.2 | 18.7 | 19.1 | 19.2 | 20.0 | 20.4 |
| Average temperature (°C) | 14.3 | 14.3 | 14.1 | 14.1 | 14.5 | 14.2 | 14.0 | 13.8 | 14.1 | 13.9 | 14.5 | 14.8 |
| Average night temperature (°C) | 10.8 | 11.4 | 10.7 | 11.0 | 11.7 | 10.9 | 10.8 | 10.9 | 11.2 | 10.4 | 11.0 | 11.7 |
| Absolute minimum temperature (°C) | 8.4 | 9.3 | 8.8 | 8.5 | 9.8 | 8.6 | 8.7 | 6.5 | 7.6 | 7.5 | 8.2 | 9.6 |
| 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) | 12.4 | 12.3 | 12.1 | 12.0 | 11.9 | 11.8 | 11.8 | 11.9 | 12.1 | 12.2 | 12.4 | 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) | 7.8 | 5.5 | 7.6 | 7.0 | 6.9 | 8.8 | 8.8 | 8.8 | 8.4 | 8.3 | 9.1 | 7.9 |
| Precipitation (mm) | 304 | 319 | 266 | 362 | 407 | 277 | 316 | 257 | 381 | 271 | 252 | 363 |
| Sunny days | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 1 | 5 | 2 | 0 |
| Rainy days | 31 | 28 | 31 | 30 | 31 | 30 | 28 | 29 | 29 | 26 | 28 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iak is at