Average annual temperature is 22.4 °C
Absolute maximum temperature: 30.7 °C
Absolute minimum temperature: 15.9 °C
Number of sunny days: 11 days
Number of rainy days: 354 days
Look at detailed online map of Sialasan
* Weather data for Sialasan 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) | 26.5 | 27.2 | 27.8 | 28.2 | 30.1 | 30.7 | 30.1 | 30.0 | 28.4 | 28.0 | 27.6 | 27.5 |
| Average daytime temperature (°C) | 25.4 | 25.9 | 26.1 | 26.7 | 27.8 | 27.7 | 27.7 | 26.8 | 26.9 | 26.6 | 26.2 | 26.1 |
| Average temperature (°C) | 21.3 | 21.5 | 21.8 | 22.5 | 23.2 | 23.0 | 23.0 | 22.4 | 22.7 | 22.3 | 22.3 | 22.3 |
| Average night temperature (°C) | 18.6 | 18.5 | 18.6 | 19.7 | 20.1 | 19.9 | 19.7 | 19.7 | 19.9 | 19.6 | 19.8 | 19.8 |
| Absolute minimum temperature (°C) | 15.9 | 16.2 | 16.7 | 18.1 | 19.0 | 17.6 | 18.1 | 18.6 | 18.7 | 18.7 | 18.6 | 19.0 |
| 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 | 12.0 | 11.0 |
| Daylight mean duration (h) | 12.0 | 12.0 | 12.1 | 12.2 | 12.2 | 12.3 | 12.3 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 8.1 | 8.8 | 8.3 | 8.3 | 8.2 | 8.6 | 8.2 | 7.4 | 7.6 | 6.9 | 6.0 | 7.8 |
| Precipitation (mm) | 288 | 301 | 216 | 221 | 319 | 231 | 231 | 484 | 390 | 329 | 529 | 335 |
| Sunny days | 1 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 1 | 0 | 0 | 0 |
| Rainy days | 30 | 28 | 28 | 30 | 31 | 27 | 28 | 31 | 29 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sialasan is at