Average annual temperature is 26.5 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: 22.4 °C
Number of sunny days: 7 days
Number of rainy days: 358 days
Look at detailed online map of Yessan
* Weather data for Yessan 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) | 34.3 | 34.4 | 33.5 | 33.6 | 33.1 | 32.9 | 32.8 | 33.2 | 33.6 | 34.6 | 34.5 | 34.2 |
| Average daytime temperature (°C) | 31.1 | 30.6 | 31.7 | 30.5 | 30.7 | 30.4 | 31.0 | 31.5 | 31.8 | 31.5 | 32.1 | 31.6 |
| Average temperature (°C) | 26.2 | 26.0 | 26.4 | 25.9 | 26.4 | 26.2 | 26.6 | 26.7 | 26.9 | 26.8 | 27.0 | 26.4 |
| Average night temperature (°C) | 23.4 | 23.5 | 23.3 | 23.4 | 23.8 | 23.5 | 23.8 | 23.6 | 23.7 | 23.8 | 24.0 | 23.8 |
| Absolute minimum temperature (°C) | 22.5 | 22.6 | 22.5 | 22.4 | 22.7 | 22.9 | 22.4 | 22.6 | 22.5 | 22.8 | 22.9 | 23.0 |
| 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 | 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) | 8.3 | 6.2 | 8.0 | 6.9 | 7.7 | 8.2 | 9.4 | 9.3 | 9.2 | 8.4 | 9.0 | 7.3 |
| Precipitation (mm) | 495 | 538 | 589 | 563 | 528 | 280 | 301 | 284 | 321 | 512 | 488 | 768 |
| Sunny days | 0 | 1 | 0 | 0 | 0 | 2 | 1 | 1 | 1 | 0 | 1 | 0 |
| Rainy days | 31 | 27 | 31 | 30 | 31 | 28 | 30 | 30 | 29 | 31 | 29 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Yessan is at