Average annual temperature is 26.3 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: 20.1 °C
Number of sunny days: 27 days
Number of rainy days: 338 days
Look at detailed online map of Alwis Town
* Weather data for Alwis Town 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) | 30.9 | 32.3 | 32.2 | 31.3 | 30.7 | 30.2 | 29.4 | 30.0 | 29.8 | 29.8 | 30.5 | 31.9 |
| Average daytime temperature (°C) | 29.6 | 29.8 | 30.1 | 30.6 | 29.6 | 29.1 | 28.7 | 29.1 | 28.2 | 28.5 | 29.1 | 29.7 |
| Average temperature (°C) | 25.1 | 25.6 | 26.4 | 27.0 | 27.3 | 27.0 | 26.8 | 27.0 | 25.9 | 25.5 | 25.5 | 25.9 |
| Average night temperature (°C) | 21.7 | 22.1 | 23.4 | 24.1 | 25.2 | 25.0 | 25.1 | 25.0 | 24.3 | 23.3 | 23.1 | 23.4 |
| Absolute minimum temperature (°C) | 20.2 | 20.1 | 22.6 | 22.9 | 23.7 | 23.4 | 23.1 | 24.1 | 23.6 | 22.3 | 22.6 | 22.5 |
| 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) | 9.5 | 9.8 | 10.3 | 10.3 | 8.7 | 9.1 | 9.9 | 10.8 | 6.9 | 7.1 | 7.5 | 7.6 |
| Precipitation (mm) | 90 | 64 | 112 | 179 | 223 | 371 | 213 | 136 | 545 | 498 | 450 | 363 |
| Sunny days | 13 | 10 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Rainy days | 18 | 18 | 31 | 28 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Alwis Town is at