Average annual temperature is 25.8 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: 18.0 °C
Number of sunny days: 40 days
Number of rainy days: 325 days
Look at detailed online map of Ioi
* Weather data for Ioi 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) | 35.5 | 34.9 | 34.2 | 32.5 | 31.2 | 31.5 | 31.4 | 31.0 | 31.9 | 31.6 | 33.8 | 34.3 |
| Average daytime temperature (°C) | 31.9 | 31.6 | 31.0 | 30.4 | 28.9 | 29.0 | 29.8 | 29.5 | 29.7 | 29.7 | 30.8 | 31.5 |
| Average temperature (°C) | 26.9 | 26.7 | 26.2 | 25.8 | 25.4 | 25.3 | 25.4 | 24.9 | 25.2 | 25.3 | 26.0 | 27.0 |
| Average night temperature (°C) | 23.5 | 23.5 | 23.0 | 23.0 | 23.1 | 22.9 | 22.5 | 22.0 | 22.4 | 22.6 | 22.8 | 23.8 |
| Absolute minimum temperature (°C) | 22.3 | 22.1 | 21.6 | 22.1 | 22.0 | 21.7 | 20.8 | 18.0 | 20.3 | 21.3 | 20.4 | 22.0 |
| 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 | 11.6 | 11.7 | 11.8 | 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) | 8.1 | 7.2 | 8.1 | 8.7 | 6.3 | 7.9 | 9.2 | 8.8 | 8.6 | 8.5 | 9.5 | 10.3 |
| Precipitation (mm) | 168 | 264 | 281 | 165 | 361 | 78 | 75 | 72 | 148 | 352 | 218 | 160 |
| Sunny days | 5 | 3 | 4 | 1 | 1 | 2 | 6 | 7 | 5 | 2 | 1 | 3 |
| Rainy days | 26 | 25 | 27 | 29 | 30 | 28 | 25 | 24 | 25 | 29 | 29 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ioi is at