Average annual temperature is 19.9 °C
Absolute maximum temperature: 27.7 °C
Absolute minimum temperature: 15.2 °C
Number of sunny days: 17 days
Number of rainy days: 348 days
Look at detailed online map of South Tapanuli Regency
* Weather data for South Tapanuli Regency 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) | 24.9 | 25.2 | 26.1 | 25.6 | 27.3 | 27.7 | 25.9 | 25.9 | 26.3 | 27.1 | 25.2 | 25.5 |
| Average daytime temperature (°C) | 23.2 | 23.6 | 23.8 | 24.3 | 24.7 | 24.9 | 23.7 | 23.9 | 24.1 | 24.5 | 24.1 | 23.7 |
| Average temperature (°C) | 19.2 | 19.5 | 19.7 | 20.2 | 20.7 | 20.6 | 19.9 | 19.7 | 19.9 | 19.9 | 19.9 | 19.8 |
| Average night temperature (°C) | 16.7 | 16.8 | 16.9 | 17.6 | 18.3 | 17.9 | 17.4 | 17.1 | 17.3 | 17.0 | 17.4 | 17.5 |
| Absolute minimum temperature (°C) | 15.9 | 15.6 | 15.2 | 15.8 | 16.8 | 16.7 | 16.1 | 15.7 | 15.6 | 15.3 | 16.1 | 16.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.0 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 7.5 | 8.5 | 8.4 | 7.8 | 8.8 | 9.3 | 8.4 | 7.6 | 8.2 | 8.0 | 7.3 | 6.8 |
| Precipitation (mm) | 216 | 229 | 238 | 283 | 186 | 170 | 144 | 313 | 219 | 216 | 293 | 521 |
| Sunny days | 1 | 2 | 0 | 0 | 1 | 5 | 6 | 1 | 0 | 1 | 0 | 0 |
| Rainy days | 30 | 26 | 31 | 30 | 30 | 25 | 25 | 30 | 30 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in South Tapanuli Regency is at