Average annual temperature is 26.0 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: 18.2 °C
Number of sunny days: 42 days
Number of rainy days: 323 days
Look at detailed online map of Karuwalagaswewa
* Weather data for Karuwalagaswewa 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) | 30.4 | 31.7 | 35.2 | 35.8 | 33.6 | 32.5 | 32.1 | 35.0 | 31.6 | 32.1 | 31.4 | 30.8 |
| Average daytime temperature (°C) | 28.6 | 29.8 | 32.5 | 33.5 | 31.2 | 30.7 | 29.9 | 32.9 | 29.4 | 29.9 | 29.8 | 29.1 |
| Average temperature (°C) | 24.2 | 25.0 | 26.7 | 27.2 | 26.8 | 26.9 | 26.4 | 27.7 | 25.5 | 25.1 | 25.1 | 25.2 |
| Average night temperature (°C) | 20.9 | 21.0 | 22.6 | 23.0 | 24.2 | 24.4 | 23.9 | 24.3 | 23.2 | 22.3 | 22.4 | 22.9 |
| Absolute minimum temperature (°C) | 19.2 | 18.2 | 21.4 | 21.4 | 22.8 | 23.1 | 22.4 | 23.3 | 22.3 | 20.8 | 21.3 | 22.0 |
| 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) | 9.6 | 9.9 | 10.5 | 10.2 | 9.0 | 10.2 | 9.3 | 10.8 | 8.4 | 8.1 | 7.5 | 8.0 |
| Precipitation (mm) | 55 | 60 | 88 | 166 | 178 | 92 | 126 | 38 | 144 | 363 | 512 | 257 |
| Sunny days | 14 | 14 | 1 | 3 | 0 | 0 | 0 | 5 | 0 | 0 | 1 | 4 |
| Rainy days | 17 | 14 | 30 | 27 | 31 | 30 | 31 | 26 | 30 | 31 | 29 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Karuwalagaswewa is at