Average annual temperature is 20.9 °C
Absolute maximum temperature: 37.6 °C
Absolute minimum temperature: 0.5 °C
Number of sunny days: 147 days
Number of rainy days: 218 days
Look at detailed online map of Sumatra
* Weather data for Sumatra United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 25.4 | 28.3 | 27.5 | 29.3 | 33.4 | 36.2 | 35.8 | 37.6 | 32.6 | 30.6 | 28.4 | 25.1 |
| Average daytime temperature (°C) | 19.8 | 22.7 | 23.7 | 26.3 | 28.8 | 30.9 | 32.6 | 34.1 | 30.3 | 26.3 | 21.6 | 17.9 |
| Average temperature (°C) | 14.4 | 17.2 | 18.4 | 20.6 | 22.9 | 25.6 | 27.7 | 28.6 | 25.0 | 20.8 | 16.1 | 13.3 |
| Average night temperature (°C) | 10.2 | 13.1 | 14.1 | 16.1 | 18.1 | 21.6 | 24.3 | 24.8 | 21.0 | 16.2 | 11.8 | 9.6 |
| Absolute minimum temperature (°C) | 0.5 | 2.7 | 2.1 | 9.6 | 12.7 | 17.9 | 22.5 | 23.2 | 16.9 | 9.6 | 2.7 | 0.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 12.0 | 12.9 | 13.7 | 14.0 | 13.9 | 13.2 | 12.3 | 11.4 | 10.7 | 10.2 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.5 | 8.6 | 9.3 | 9.8 | 11.0 | 10.7 | 10.9 | 11.1 | 9.7 | 9.7 | 7.2 | 6.4 |
| Precipitation (mm) | 193 | 128 | 91 | 142 | 133 | 257 | 140 | 173 | 157 | 52 | 79 | 312 |
| Sunny days | 18 | 13 | 12 | 9 | 9 | 4 | 1 | 5 | 11 | 24 | 21 | 20 |
| Rainy days | 13 | 15 | 19 | 21 | 22 | 26 | 30 | 26 | 19 | 7 | 9 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sumatra is at