Average annual temperature is 18.2 °C
Absolute maximum temperature: 27.0 °C
Absolute minimum temperature: 10.5 °C
Number of sunny days: 27 days
Number of rainy days: 338 days
Look at detailed online map of Isak
* Weather data for Isak 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) | 24.1 | 24.5 | 25.9 | 26.6 | 25.7 | 27.0 | 25.2 | 25.3 | 26.1 | 25.4 | 25.2 | 24.9 |
| Average daytime temperature (°C) | 22.4 | 22.9 | 23.4 | 24.2 | 24.4 | 24.1 | 23.3 | 23.5 | 23.7 | 23.3 | 23.0 | 22.8 |
| Average temperature (°C) | 17.4 | 17.7 | 18.0 | 18.5 | 18.7 | 18.6 | 18.1 | 18.1 | 18.3 | 18.1 | 18.2 | 18.2 |
| Average night temperature (°C) | 13.9 | 13.9 | 13.9 | 14.4 | 14.4 | 14.2 | 13.9 | 14.1 | 14.7 | 14.8 | 14.9 | 14.9 |
| Absolute minimum temperature (°C) | 10.5 | 10.8 | 12.0 | 12.9 | 12.7 | 11.1 | 11.9 | 12.4 | 11.6 | 13.3 | 13.7 | 13.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.4 | 12.4 | 12.3 | 12.1 | 12.0 | 11.9 | 11.9 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 8.5 | 8.9 | 9.1 | 9.5 | 9.0 | 9.2 | 8.4 | 7.7 | 7.6 | 7.8 | 6.9 | 7.7 |
| Precipitation (mm) | 226 | 161 | 140 | 150 | 190 | 112 | 108 | 212 | 224 | 428 | 413 | 206 |
| Sunny days | 2 | 1 | 0 | 1 | 2 | 8 | 9 | 2 | 2 | 0 | 0 | 0 |
| Rainy days | 29 | 27 | 31 | 29 | 29 | 22 | 22 | 29 | 28 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Isak is at