Average annual temperature is 26.9 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 19.0 °C
Number of sunny days: 50 days
Number of rainy days: 315 days
Look at detailed online map of Mahagalwewa
* Weather data for Mahagalwewa Sri Lanka is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 33.1 | 33.4 | 34.2 | 35.3 | 35.7 | 35.8 | 35.8 | 37.7 | 32.0 | 31.0 | 30.9 | 30.4 |
| Average daytime temperature (°C) | 30.8 | 31.1 | 32.1 | 33.0 | 32.2 | 34.5 | 33.6 | 35.4 | 30.3 | 29.4 | 29.3 | 29.0 |
| Average temperature (°C) | 25.8 | 26.2 | 26.9 | 27.5 | 27.8 | 29.1 | 28.4 | 29.2 | 26.3 | 25.3 | 25.2 | 25.6 |
| Average night temperature (°C) | 21.7 | 22.4 | 23.5 | 23.8 | 24.9 | 25.5 | 24.8 | 25.0 | 23.8 | 22.9 | 22.7 | 23.2 |
| Absolute minimum temperature (°C) | 19.0 | 20.6 | 22.3 | 22.6 | 24.0 | 24.3 | 23.2 | 23.6 | 23.0 | 21.8 | 21.9 | 22.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum 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 |
| Daylight mean duration (h) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.4 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.5 | 9.9 | 9.9 | 9.9 | 9.5 | 10.9 | 10.2 | 11.1 | 9.2 | 7.4 | 7.7 | 7.9 |
| Precipitation (mm) | 77 | 154 | 129 | 132 | 160 | 31 | 51 | 49 | 191 | 487 | 525 | 312 |
| Sunny days | 11 | 9 | 3 | 1 | 3 | 5 | 4 | 9 | 1 | 0 | 0 | 4 |
| Rainy days | 20 | 19 | 28 | 29 | 28 | 25 | 27 | 22 | 29 | 31 | 30 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mahagalwewa is at