Average annual temperature is 26.4 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: 18.5 °C
Number of sunny days: 42 days
Number of rainy days: 323 days
Look at detailed online map of Okandayaya West
* Weather data for Okandayaya 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) | 31.7 | 33.3 | 33.3 | 33.8 | 33.9 | 32.6 | 32.7 | 35.0 | 31.4 | 31.2 | 30.7 | 30.9 |
| Average daytime temperature (°C) | 30.5 | 30.9 | 31.2 | 32.1 | 31.2 | 31.6 | 30.9 | 33.3 | 29.5 | 29.1 | 29.7 | 29.4 |
| Average temperature (°C) | 25.1 | 25.6 | 26.2 | 26.9 | 27.4 | 27.7 | 27.3 | 28.4 | 25.9 | 25.2 | 25.2 | 25.6 |
| Average night temperature (°C) | 20.9 | 21.8 | 22.8 | 23.3 | 24.8 | 25.0 | 24.6 | 25.0 | 23.6 | 22.9 | 22.6 | 22.9 |
| Absolute minimum temperature (°C) | 18.5 | 19.9 | 20.8 | 22.5 | 23.6 | 23.4 | 23.1 | 23.4 | 22.9 | 22.0 | 21.8 | 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.4 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.5 | 9.5 | 9.7 | 10.1 | 9.3 | 10.8 | 9.8 | 10.9 | 8.5 | 7.0 | 7.3 | 7.6 |
| Precipitation (mm) | 107 | 125 | 205 | 162 | 107 | 38 | 70 | 39 | 190 | 428 | 421 | 340 |
| Sunny days | 8 | 7 | 2 | 0 | 4 | 3 | 7 | 8 | 0 | 0 | 0 | 3 |
| Rainy days | 23 | 21 | 29 | 30 | 27 | 27 | 24 | 23 | 30 | 31 | 30 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Okandayaya West is at