Average annual temperature is 26.7 °C
Absolute maximum temperature: 37.4 °C
Absolute minimum temperature: 18.8 °C
Number of sunny days: 80 days
Number of rainy days: 285 days
Look at detailed online map of 21 Colony West
* Weather data for 21 Colony 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) | 29.1 | 30.8 | 34.6 | 35.6 | 35.3 | 35.0 | 36.4 | 37.4 | 34.5 | 33.5 | 31.4 | 31.2 |
| Average daytime temperature (°C) | 27.8 | 29.1 | 31.4 | 33.6 | 32.4 | 33.5 | 33.5 | 35.3 | 32.7 | 31.4 | 29.7 | 28.5 |
| Average temperature (°C) | 23.8 | 24.6 | 26.3 | 27.6 | 27.7 | 28.6 | 28.4 | 28.9 | 27.4 | 26.0 | 25.2 | 25.1 |
| Average night temperature (°C) | 20.9 | 21.2 | 22.8 | 23.6 | 24.7 | 25.2 | 25.1 | 24.8 | 24.2 | 23.1 | 22.7 | 22.8 |
| Absolute minimum temperature (°C) | 18.8 | 18.9 | 21.9 | 22.3 | 23.3 | 24.1 | 24.0 | 24.1 | 23.5 | 22.1 | 22.2 | 21.8 |
| 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 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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 | 9.9 | 10.5 | 10.4 | 8.9 | 10.7 | 9.7 | 10.8 | 9.4 | 8.8 | 7.2 | 7.4 |
| Precipitation (mm) | 118 | 111 | 79 | 124 | 124 | 14 | 30 | 103 | 67 | 402 | 482 | 280 |
| Sunny days | 14 | 11 | 6 | 6 | 9 | 10 | 9 | 13 | 1 | 1 | 0 | 0 |
| Rainy days | 17 | 17 | 25 | 24 | 22 | 20 | 22 | 18 | 29 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in 21 Colony West is at