Average annual temperature is 27.9 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: 20.8 °C
Number of sunny days: 130 days
Number of rainy days: 235 days
Look at detailed online map of Allarai
* Weather data for Allarai 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) | 28.3 | 30.6 | 33.7 | 35.1 | 32.8 | 33.4 | 34.3 | 34.6 | 32.6 | 34.1 | 31.2 | 29.8 |
| Average daytime temperature (°C) | 27.5 | 28.3 | 31.1 | 33.0 | 31.3 | 31.7 | 31.5 | 32.3 | 31.0 | 31.3 | 29.2 | 28.4 |
| Average temperature (°C) | 25.3 | 25.7 | 27.9 | 29.3 | 29.2 | 29.5 | 29.1 | 29.3 | 28.8 | 28.1 | 26.3 | 26.3 |
| Average night temperature (°C) | 23.3 | 23.3 | 25.2 | 26.2 | 27.5 | 28.0 | 27.4 | 27.0 | 26.9 | 25.2 | 23.9 | 24.5 |
| Absolute minimum temperature (°C) | 20.8 | 21.1 | 24.1 | 24.6 | 24.1 | 25.9 | 26.9 | 26.4 | 25.0 | 23.6 | 23.0 | 23.9 |
| 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) | 9.8 | 10.2 | 11.1 | 11.0 | 9.5 | 10.3 | 9.7 | 11.3 | 10.6 | 10.6 | 8.3 | 8.1 |
| Precipitation (mm) | 43 | 147 | 19 | 55 | 80 | 47 | 43 | 8 | 55 | 110 | 480 | 250 |
| Sunny days | 17 | 17 | 14 | 14 | 15 | 15 | 10 | 23 | 2 | 2 | 0 | 1 |
| Rainy days | 14 | 11 | 17 | 16 | 16 | 15 | 21 | 8 | 28 | 29 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Allarai is at