Average annual temperature is 26.2 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: 17.4 °C
Number of sunny days: 68 days
Number of rainy days: 297 days
Look at detailed online map of Demunnawa
* Weather data for Demunnawa 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) | 28.5 | 30.1 | 33.8 | 35.1 | 34.2 | 34.3 | 35.2 | 37.1 | 34.3 | 32.6 | 30.9 | 30.8 |
| Average daytime temperature (°C) | 27.6 | 28.6 | 30.8 | 33.1 | 31.5 | 32.7 | 32.5 | 35.0 | 31.7 | 30.7 | 29.5 | 28.3 |
| Average temperature (°C) | 23.5 | 24.3 | 26.0 | 27.3 | 27.2 | 28.0 | 27.7 | 28.6 | 26.7 | 25.6 | 25.0 | 24.8 |
| Average night temperature (°C) | 20.3 | 21.1 | 22.5 | 23.4 | 24.5 | 24.8 | 24.5 | 24.6 | 23.8 | 22.8 | 22.5 | 22.7 |
| Absolute minimum temperature (°C) | 17.4 | 19.2 | 21.5 | 22.3 | 23.2 | 23.3 | 23.5 | 23.8 | 23.1 | 21.9 | 21.8 | 21.7 |
| 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 | 12.5 | 12.4 | 12.2 | 11.9 | 11.8 | 11.7 |
| 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) | 9.1 | 9.5 | 10.3 | 10.3 | 8.9 | 10.8 | 9.9 | 10.9 | 9.3 | 8.3 | 7.0 | 6.9 |
| Precipitation (mm) | 121 | 99 | 74 | 117 | 112 | 23 | 38 | 50 | 61 | 302 | 480 | 274 |
| Sunny days | 13 | 9 | 5 | 6 | 6 | 11 | 6 | 12 | 0 | 0 | 0 | 0 |
| Rainy days | 18 | 19 | 26 | 24 | 25 | 19 | 25 | 19 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Demunnawa is at