Average annual temperature is 26.6 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: 19.1 °C
Number of sunny days: 71 days
Number of rainy days: 294 days
Look at detailed online map of Siyambala Wewa
* Weather data for Siyambala Wewa 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) | 29.6 | 31.7 | 34.6 | 35.5 | 34.1 | 33.8 | 36.0 | 37.1 | 33.6 | 33.1 | 31.8 | 30.7 |
| Average daytime temperature (°C) | 28.5 | 29.8 | 31.9 | 33.6 | 31.8 | 32.5 | 32.5 | 34.8 | 31.7 | 31.3 | 30.1 | 29.0 |
| Average temperature (°C) | 24.0 | 25.0 | 26.6 | 27.6 | 27.5 | 28.1 | 28.0 | 28.7 | 26.9 | 26.0 | 25.3 | 25.3 |
| Average night temperature (°C) | 20.8 | 21.3 | 23.0 | 23.7 | 24.7 | 25.2 | 25.1 | 24.9 | 24.0 | 23.2 | 22.8 | 22.9 |
| Absolute minimum temperature (°C) | 19.1 | 19.1 | 21.9 | 22.6 | 23.4 | 24.1 | 24.1 | 24.3 | 23.0 | 22.1 | 22.0 | 22.4 |
| 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 | 11.7 | 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 | 9.9 | 10.7 | 10.3 | 8.9 | 10.6 | 9.6 | 11.0 | 9.5 | 8.6 | 7.1 | 7.8 |
| Precipitation (mm) | 70 | 114 | 79 | 122 | 99 | 25 | 33 | 46 | 81 | 277 | 470 | 276 |
| Sunny days | 15 | 13 | 6 | 5 | 2 | 5 | 8 | 16 | 0 | 0 | 0 | 1 |
| Rainy days | 16 | 15 | 25 | 25 | 29 | 25 | 23 | 15 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siyambala Wewa is at