Average annual temperature is 27.1 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: 17.5 °C
Number of sunny days: 55 days
Number of rainy days: 310 days
Look at detailed online map of Dehiattekandiya
* Weather data for Dehiattekandiya 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) | 28.8 | 30.3 | 32.8 | 34.9 | 36.4 | 37.5 | 38.3 | 39.5 | 37.9 | 33.1 | 31.0 | 30.8 |
| Average daytime temperature (°C) | 27.8 | 28.7 | 30.3 | 32.7 | 33.2 | 36.3 | 35.5 | 37.7 | 34.3 | 31.1 | 29.6 | 28.8 |
| Average temperature (°C) | 23.7 | 24.5 | 25.8 | 27.4 | 28.0 | 30.6 | 30.0 | 30.2 | 28.2 | 25.9 | 25.2 | 25.1 |
| Average night temperature (°C) | 20.3 | 21.4 | 22.5 | 23.6 | 24.2 | 26.1 | 25.7 | 24.8 | 24.3 | 23.0 | 22.8 | 22.8 |
| Absolute minimum temperature (°C) | 17.5 | 19.6 | 21.0 | 22.5 | 22.8 | 24.9 | 24.2 | 23.7 | 22.9 | 21.7 | 22.4 | 21.8 |
| 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 | 12.0 | 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) | 8.5 | 9.1 | 9.6 | 10.1 | 9.4 | 10.8 | 9.8 | 10.7 | 8.7 | 8.4 | 7.1 | 6.8 |
| Precipitation (mm) | 174 | 145 | 146 | 107 | 185 | 31 | 14 | 48 | 108 | 394 | 497 | 417 |
| Sunny days | 7 | 5 | 3 | 4 | 11 | 6 | 10 | 7 | 1 | 1 | 0 | 0 |
| Rainy days | 24 | 23 | 28 | 26 | 20 | 24 | 21 | 24 | 29 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Dehiattekandiya is at