Average annual temperature is 27.0 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: 18.7 °C
Number of sunny days: 48 days
Number of rainy days: 317 days
Look at detailed online map of Sevanagala
* Weather data for Sevanagala 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) | 32.8 | 33.4 | 33.6 | 35.9 | 35.7 | 35.5 | 35.5 | 37.0 | 31.9 | 31.2 | 31.0 | 30.6 |
| Average daytime temperature (°C) | 30.8 | 31.1 | 31.9 | 32.9 | 32.2 | 34.3 | 33.3 | 35.2 | 30.3 | 29.4 | 29.3 | 29.1 |
| Average temperature (°C) | 25.6 | 26.1 | 26.8 | 27.4 | 27.8 | 29.2 | 28.4 | 29.3 | 26.3 | 25.4 | 25.3 | 25.7 |
| Average night temperature (°C) | 21.5 | 22.2 | 23.5 | 23.9 | 25.0 | 25.7 | 25.0 | 25.2 | 24.0 | 23.2 | 22.9 | 23.4 |
| Absolute minimum temperature (°C) | 18.7 | 20.8 | 21.6 | 22.8 | 24.0 | 24.1 | 23.6 | 23.6 | 23.3 | 22.1 | 22.3 | 22.3 |
| 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 | 9.7 | 9.8 | 9.8 | 9.4 | 10.9 | 10.1 | 11.1 | 9.1 | 7.2 | 7.6 | 7.8 |
| Precipitation (mm) | 70 | 135 | 145 | 167 | 159 | 35 | 59 | 40 | 219 | 470 | 499 | 320 |
| Sunny days | 11 | 8 | 3 | 1 | 2 | 3 | 6 | 9 | 1 | 0 | 0 | 4 |
| Rainy days | 20 | 20 | 28 | 29 | 29 | 27 | 25 | 22 | 29 | 31 | 30 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sevanagala is at