Average annual temperature is 27.0 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 76 days
Number of rainy days: 289 days
Look at detailed online map of Suriyadamana
* Weather data for Suriyadamana 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) | 29.8 | 32.1 | 35.5 | 36.5 | 34.7 | 34.5 | 37.4 | 38.2 | 34.6 | 34.4 | 31.7 | 31.0 |
| Average daytime temperature (°C) | 28.8 | 30.2 | 32.5 | 34.2 | 32.1 | 33.1 | 33.3 | 35.8 | 32.4 | 31.5 | 30.1 | 29.3 |
| Average temperature (°C) | 24.2 | 25.1 | 26.9 | 27.9 | 28.0 | 28.8 | 28.7 | 29.3 | 27.7 | 26.3 | 25.5 | 25.5 |
| Average night temperature (°C) | 20.7 | 21.1 | 23.1 | 24.0 | 25.2 | 26.0 | 25.7 | 25.5 | 24.6 | 23.5 | 23.0 | 23.1 |
| Absolute minimum temperature (°C) | 18.4 | 19.0 | 21.8 | 22.5 | 23.6 | 24.8 | 24.8 | 24.8 | 23.6 | 22.4 | 22.4 | 22.6 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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) | 9.2 | 9.8 | 10.7 | 10.3 | 8.9 | 10.4 | 9.5 | 10.9 | 9.6 | 8.6 | 6.9 | 7.4 |
| Precipitation (mm) | 73 | 125 | 81 | 128 | 92 | 26 | 38 | 35 | 80 | 246 | 387 | 280 |
| Sunny days | 16 | 14 | 6 | 7 | 2 | 5 | 8 | 16 | 0 | 1 | 0 | 1 |
| Rainy days | 15 | 14 | 25 | 23 | 29 | 25 | 23 | 15 | 30 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Suriyadamana is at