Average annual temperature is 27.6 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 21.0 °C
Number of sunny days: 62 days
Number of rainy days: 303 days
Look at detailed online map of Ammanthanaveli
* Weather data for Ammanthanaveli 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) | 28.7 | 29.4 | 32.0 | 33.8 | 35.7 | 36.8 | 37.4 | 37.7 | 35.6 | 32.8 | 30.8 | 31.1 |
| Average daytime temperature (°C) | 27.5 | 28.0 | 29.6 | 31.5 | 32.9 | 35.5 | 35.4 | 35.8 | 33.2 | 30.5 | 29.1 | 28.5 |
| Average temperature (°C) | 25.3 | 25.7 | 26.9 | 27.9 | 28.4 | 30.3 | 30.0 | 29.7 | 28.3 | 26.5 | 26.0 | 26.2 |
| Average night temperature (°C) | 23.2 | 23.3 | 24.2 | 24.8 | 25.6 | 27.1 | 26.8 | 26.3 | 25.5 | 24.0 | 23.7 | 24.3 |
| Absolute minimum temperature (°C) | 21.7 | 21.0 | 23.1 | 23.1 | 23.8 | 26.1 | 26.1 | 25.1 | 23.6 | 22.9 | 22.9 | 23.5 |
| 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 | 11.8 | 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) | 9.1 | 9.6 | 10.6 | 10.6 | 9.5 | 10.7 | 9.6 | 11.0 | 9.8 | 9.5 | 8.0 | 8.4 |
| Precipitation (mm) | 177 | 156 | 83 | 80 | 154 | 19 | 28 | 56 | 197 | 386 | 526 | 386 |
| Sunny days | 12 | 7 | 8 | 5 | 6 | 5 | 7 | 9 | 1 | 2 | 0 | 0 |
| Rainy days | 19 | 21 | 23 | 25 | 25 | 25 | 24 | 22 | 29 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ammanthanaveli is at