Average annual temperature is 25.8 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: 20.4 °C
Number of sunny days: 16 days
Number of rainy days: 349 days
Look at detailed online map of Iessa
* Weather data for Iessa 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) | 35.2 | 33.7 | 33.0 | 33.2 | 32.9 | 31.9 | 31.9 | 31.5 | 32.3 | 33.9 | 34.0 | 33.9 |
| Average daytime temperature (°C) | 31.5 | 31.4 | 31.1 | 30.5 | 29.8 | 29.7 | 29.7 | 30.0 | 30.1 | 31.3 | 31.3 | 32.2 |
| Average temperature (°C) | 26.4 | 26.1 | 25.8 | 25.4 | 25.3 | 25.5 | 25.4 | 25.5 | 25.3 | 25.9 | 26.3 | 26.6 |
| Average night temperature (°C) | 23.2 | 23.1 | 22.9 | 22.8 | 23.0 | 23.0 | 22.7 | 22.2 | 22.3 | 22.5 | 23.1 | 23.5 |
| Absolute minimum temperature (°C) | 22.0 | 22.3 | 22.1 | 21.7 | 21.5 | 22.1 | 21.3 | 20.5 | 20.9 | 20.4 | 22.1 | 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) | 12.4 | 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) | 8.8 | 8.8 | 8.6 | 7.4 | 6.7 | 7.1 | 7.5 | 8.5 | 7.2 | 8.7 | 8.9 | 9.4 |
| Precipitation (mm) | 519 | 507 | 513 | 736 | 653 | 325 | 274 | 118 | 241 | 304 | 320 | 625 |
| Sunny days | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | 4 | 4 | 0 | 0 |
| Rainy days | 28 | 28 | 31 | 29 | 31 | 30 | 31 | 27 | 26 | 27 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iessa is at