Average annual temperature is 26.4 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: 17.3 °C
Number of sunny days: 69 days
Number of rainy days: 296 days
Look at detailed online map of Kahallegama
* Weather data for Kahallegama 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 | 30.5 | 33.7 | 35.1 | 34.2 | 34.1 | 35.7 | 37.0 | 34.9 | 33.1 | 31.5 | 31.5 |
| Average daytime temperature (°C) | 27.8 | 28.9 | 31.1 | 33.3 | 31.7 | 32.6 | 32.9 | 35.1 | 32.3 | 31.1 | 29.7 | 28.6 |
| Average temperature (°C) | 23.6 | 24.5 | 26.2 | 27.5 | 27.3 | 28.1 | 28.0 | 28.7 | 27.1 | 25.8 | 25.1 | 25.0 |
| Average night temperature (°C) | 20.3 | 20.9 | 22.6 | 23.5 | 24.4 | 24.9 | 24.8 | 24.6 | 23.9 | 22.9 | 22.5 | 22.7 |
| Absolute minimum temperature (°C) | 17.3 | 18.8 | 21.1 | 22.0 | 23.2 | 23.6 | 23.4 | 23.9 | 23.1 | 21.7 | 21.7 | 21.9 |
| 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) | 9.3 | 9.8 | 10.5 | 10.4 | 8.9 | 10.8 | 9.7 | 10.9 | 9.2 | 8.7 | 7.3 | 7.5 |
| Precipitation (mm) | 98 | 93 | 61 | 111 | 110 | 24 | 35 | 84 | 82 | 327 | 459 | 253 |
| Sunny days | 13 | 13 | 5 | 6 | 4 | 6 | 9 | 12 | 0 | 0 | 0 | 1 |
| Rainy days | 18 | 15 | 26 | 24 | 27 | 24 | 22 | 19 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Kahallegama is at