Average annual temperature is 21.7 °C
Absolute maximum temperature: 29.9 °C
Absolute minimum temperature: 15.3 °C
Number of sunny days: 5 days
Number of rainy days: 360 days
Look at detailed online map of Kabupaten Simalungun
* Weather data for Kabupaten Simalungun 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) | 25.9 | 26.2 | 27.1 | 27.5 | 29.9 | 29.7 | 29.5 | 29.1 | 27.8 | 27.6 | 27.1 | 27.0 |
| Average daytime temperature (°C) | 24.8 | 25.3 | 25.6 | 26.1 | 27.2 | 26.9 | 26.9 | 26.1 | 26.3 | 26.0 | 25.5 | 25.4 |
| Average temperature (°C) | 20.8 | 21.0 | 21.3 | 22.0 | 22.5 | 22.3 | 22.2 | 21.7 | 22.1 | 21.7 | 21.6 | 21.7 |
| Average night temperature (°C) | 18.0 | 17.9 | 18.1 | 18.9 | 19.3 | 19.0 | 18.8 | 18.7 | 19.1 | 18.8 | 19.0 | 19.0 |
| Absolute minimum temperature (°C) | 15.3 | 15.5 | 16.5 | 17.0 | 17.9 | 16.3 | 17.0 | 17.2 | 18.1 | 17.7 | 17.8 | 17.7 |
| 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 | 12.3 | 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) | 8.2 | 8.8 | 8.3 | 8.3 | 8.2 | 8.8 | 8.4 | 7.3 | 7.5 | 6.9 | 6.1 | 7.9 |
| Precipitation (mm) | 244 | 265 | 212 | 238 | 373 | 314 | 312 | 610 | 434 | 403 | 478 | 315 |
| Sunny days | 0 | 0 | 2 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 0 |
| Rainy days | 31 | 28 | 29 | 30 | 31 | 29 | 29 | 31 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Kabupaten Simalungun is at