Average annual temperature is 25.0 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: 17.5 °C
Number of sunny days: 11 days
Number of rainy days: 354 days
Look at detailed online map of Opatha West
* Weather data for Opatha 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) | 29.7 | 30.8 | 31.6 | 32.3 | 30.5 | 29.8 | 29.2 | 30.1 | 29.8 | 30.4 | 30.5 | 30.8 |
| Average daytime temperature (°C) | 28.3 | 29.1 | 30.0 | 30.4 | 28.9 | 28.4 | 28.2 | 29.0 | 27.7 | 27.8 | 28.6 | 28.6 |
| Average temperature (°C) | 23.9 | 24.4 | 25.2 | 25.8 | 25.8 | 25.4 | 25.3 | 25.7 | 24.6 | 24.6 | 24.8 | 24.9 |
| Average night temperature (°C) | 20.3 | 20.6 | 21.5 | 22.4 | 23.6 | 23.3 | 23.1 | 23.2 | 22.7 | 22.5 | 22.4 | 22.3 |
| Absolute minimum temperature (°C) | 17.5 | 18.3 | 19.7 | 20.1 | 22.2 | 22.1 | 21.8 | 22.0 | 22.0 | 21.6 | 20.9 | 21.1 |
| 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) | 9.1 | 9.2 | 9.7 | 9.8 | 7.9 | 9.1 | 8.7 | 10.5 | 6.2 | 5.9 | 6.6 | 7.2 |
| Precipitation (mm) | 191 | 203 | 212 | 203 | 273 | 246 | 316 | 193 | 720 | 651 | 567 | 464 |
| Sunny days | 6 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Rainy days | 25 | 25 | 30 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Opatha West during the most sunny months:
The largest precipitation sum in Opatha West is at