Average annual temperature is 27.1 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: 19.3 °C
Number of sunny days: 29 days
Number of rainy days: 336 days
Look at detailed online map of Bandaraduwa
* Weather data for Bandaraduwa 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) | 29.0 | 30.0 | 33.9 | 35.4 | 36.3 | 37.4 | 38.8 | 38.6 | 36.0 | 33.1 | 32.2 | 32.3 |
| Average daytime temperature (°C) | 27.9 | 28.5 | 30.5 | 32.6 | 33.5 | 35.9 | 36.0 | 36.9 | 33.5 | 31.2 | 30.0 | 29.1 |
| Average temperature (°C) | 24.3 | 24.8 | 26.1 | 27.5 | 28.1 | 29.4 | 29.7 | 29.9 | 27.6 | 26.2 | 25.6 | 25.5 |
| Average night temperature (°C) | 21.4 | 21.9 | 23.0 | 23.9 | 24.3 | 25.1 | 25.2 | 25.3 | 24.3 | 23.4 | 23.2 | 23.2 |
| Absolute minimum temperature (°C) | 19.3 | 20.0 | 22.3 | 22.4 | 23.0 | 24.3 | 23.6 | 24.1 | 23.1 | 22.7 | 22.7 | 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 | 12.5 | 12.5 | 12.4 | 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) | 9.0 | 9.2 | 9.8 | 10.4 | 9.6 | 10.7 | 9.8 | 11.1 | 9.4 | 9.0 | 7.7 | 7.4 |
| Precipitation (mm) | 187 | 143 | 105 | 86 | 145 | 76 | 56 | 55 | 270 | 395 | 479 | 474 |
| Sunny days | 6 | 5 | 3 | 0 | 6 | 2 | 3 | 3 | 1 | 0 | 0 | 0 |
| Rainy days | 25 | 23 | 28 | 30 | 25 | 28 | 28 | 28 | 29 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Bandaraduwa is at