Average annual temperature is 26.2 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: 19.2 °C
Number of sunny days: 14 days
Number of rainy days: 351 days
Look at detailed online map of Deshasthra Kalutara West
* Weather data for Deshasthra Kalutara West 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) | 31.7 | 31.7 | 31.9 | 32.9 | 31.2 | 30.5 | 30.1 | 30.2 | 30.2 | 30.6 | 30.8 | 31.7 |
| Average daytime temperature (°C) | 29.6 | 29.6 | 30.3 | 31.0 | 29.8 | 29.4 | 29.1 | 29.5 | 28.7 | 29.0 | 29.4 | 29.7 |
| Average temperature (°C) | 25.0 | 25.6 | 26.3 | 26.9 | 27.1 | 26.8 | 26.9 | 27.0 | 25.9 | 25.6 | 25.6 | 25.8 |
| Average night temperature (°C) | 21.2 | 22.3 | 23.1 | 23.9 | 24.9 | 24.6 | 24.7 | 24.8 | 24.0 | 23.2 | 23.0 | 23.1 |
| Absolute minimum temperature (°C) | 19.2 | 21.2 | 21.5 | 22.6 | 23.7 | 23.1 | 23.4 | 23.9 | 23.3 | 22.0 | 22.3 | 22.2 |
| 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 | 12.5 | 12.3 | 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) | 9.6 | 9.9 | 10.3 | 10.3 | 8.3 | 9.1 | 9.5 | 10.7 | 7.2 | 7.1 | 7.4 | 7.9 |
| Precipitation (mm) | 85 | 95 | 114 | 168 | 240 | 371 | 267 | 171 | 584 | 598 | 546 | 339 |
| Sunny days | 9 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Rainy days | 22 | 24 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Deshasthra Kalutara West is at