Average annual temperature is 27.7 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: 20.2 °C
Number of sunny days: 125 days
Number of rainy days: 240 days
Look at detailed online map of Adampan
* Weather data for Adampan 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) | 28.2 | 29.8 | 34.0 | 35.9 | 35.6 | 36.3 | 36.8 | 37.3 | 35.4 | 35.1 | 31.2 | 30.8 |
| Average daytime temperature (°C) | 27.2 | 28.1 | 31.0 | 33.9 | 32.7 | 33.9 | 34.5 | 35.6 | 33.6 | 32.1 | 29.3 | 28.3 |
| Average temperature (°C) | 24.7 | 25.1 | 27.1 | 28.6 | 28.8 | 30.0 | 29.9 | 30.1 | 29.2 | 27.4 | 25.8 | 25.8 |
| Average night temperature (°C) | 22.5 | 22.3 | 24.1 | 24.9 | 26.0 | 27.1 | 26.8 | 26.2 | 26.2 | 24.2 | 23.5 | 23.9 |
| Absolute minimum temperature (°C) | 20.2 | 20.3 | 22.9 | 22.9 | 23.8 | 25.7 | 26.0 | 25.3 | 25.1 | 22.8 | 22.9 | 23.2 |
| 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) | 11.6 | 11.8 | 12.1 | 12.3 | 12.6 | 12.7 | 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) | 9.5 | 10.3 | 11.0 | 10.7 | 9.2 | 10.6 | 9.7 | 11.2 | 10.5 | 10.0 | 7.5 | 7.6 |
| Precipitation (mm) | 103 | 156 | 41 | 89 | 64 | 37 | 17 | 30 | 36 | 168 | 529 | 303 |
| Sunny days | 16 | 16 | 12 | 8 | 15 | 15 | 14 | 21 | 2 | 4 | 1 | 1 |
| Rainy days | 15 | 12 | 19 | 22 | 16 | 15 | 17 | 10 | 28 | 27 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Adampan is at