Average annual temperature is 27.0 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 20.1 °C
Number of sunny days: 140 days
Number of rainy days: 225 days
Look at detailed online map of Posan
* Weather data for Posan Indonesia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.7 | 31.0 | 32.5 | 32.2 | 32.7 | 34.4 | 33.6 | 33.7 | 36.3 | 38.5 | 37.5 | 38.4 |
| Average daytime temperature (°C) | 30.1 | 28.6 | 30.6 | 30.9 | 31.4 | 32.6 | 31.1 | 32.5 | 33.7 | 36.4 | 35.6 | 34.5 |
| Average temperature (°C) | 26.1 | 25.1 | 26.0 | 26.6 | 26.8 | 27.4 | 26.1 | 26.2 | 27.0 | 29.5 | 29.4 | 28.5 |
| Average night temperature (°C) | 23.3 | 22.7 | 23.1 | 23.7 | 23.5 | 23.8 | 22.7 | 21.8 | 22.5 | 24.4 | 25.2 | 24.5 |
| Absolute minimum temperature (°C) | 22.1 | 22.0 | 21.6 | 22.5 | 22.3 | 22.2 | 20.1 | 20.4 | 20.5 | 22.8 | 23.9 | 23.1 |
| 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 | 12.3 | 12.1 | 11.9 | 11.8 | 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) | 8.4 | 6.1 | 9.1 | 9.0 | 10.4 | 10.8 | 10.7 | 11.0 | 11.0 | 11.3 | 10.8 | 10.0 |
| Precipitation (mm) | 181 | 415 | 280 | 203 | 81 | 65 | 41 | 0 | 1 | 10 | 75 | 105 |
| Sunny days | 2 | 1 | 1 | 1 | 18 | 11 | 25 | 29 | 28 | 10 | 4 | 10 |
| Rainy days | 29 | 27 | 30 | 29 | 13 | 19 | 6 | 2 | 2 | 21 | 26 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Posan is at