Average annual temperature is 27.4 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: 18.1 °C
Number of sunny days: 63 days
Number of rainy days: 302 days
Look at detailed online map of Katuwanvila West
* Weather data for Katuwanvila 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) | 29.4 | 31.0 | 34.0 | 36.1 | 35.8 | 36.5 | 37.8 | 38.6 | 37.1 | 33.2 | 31.8 | 32.0 |
| Average daytime temperature (°C) | 28.2 | 29.1 | 31.2 | 33.6 | 33.4 | 35.0 | 35.0 | 36.9 | 34.1 | 31.7 | 30.1 | 29.3 |
| Average temperature (°C) | 24.2 | 24.9 | 26.4 | 27.8 | 28.4 | 30.1 | 30.0 | 30.3 | 28.6 | 26.4 | 25.6 | 25.6 |
| Average night temperature (°C) | 20.8 | 21.6 | 23.0 | 24.0 | 25.3 | 27.0 | 26.7 | 26.1 | 25.4 | 23.5 | 23.1 | 23.2 |
| Absolute minimum temperature (°C) | 18.1 | 19.1 | 22.4 | 22.5 | 23.4 | 25.8 | 25.7 | 24.8 | 23.4 | 22.4 | 22.2 | 21.6 |
| 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 | 12.5 | 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) | 8.9 | 9.4 | 10.0 | 10.5 | 9.2 | 10.8 | 9.6 | 10.7 | 9.6 | 8.4 | 6.9 | 7.1 |
| Precipitation (mm) | 141 | 128 | 77 | 89 | 137 | 19 | 27 | 57 | 124 | 387 | 523 | 436 |
| Sunny days | 10 | 7 | 3 | 6 | 6 | 9 | 10 | 8 | 2 | 2 | 0 | 0 |
| Rainy days | 21 | 21 | 28 | 24 | 25 | 21 | 21 | 23 | 28 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Katuwanvila West is at