Average annual temperature is 27.3 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: 18.2 °C
Number of sunny days: 63 days
Number of rainy days: 302 days
Look at detailed online map of Ihalawewa
* Weather data for Ihalawewa 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) | 29.5 | 30.4 | 33.7 | 35.7 | 35.8 | 36.9 | 38.4 | 39.5 | 37.6 | 33.5 | 31.4 | 32.0 |
| Average daytime temperature (°C) | 28.0 | 28.9 | 30.7 | 33.4 | 33.3 | 35.5 | 35.5 | 37.8 | 34.9 | 31.5 | 30.1 | 29.2 |
| Average temperature (°C) | 24.0 | 24.8 | 26.2 | 27.7 | 28.1 | 30.2 | 30.3 | 30.4 | 28.5 | 26.3 | 25.5 | 25.4 |
| Average night temperature (°C) | 20.8 | 21.5 | 22.9 | 24.1 | 24.6 | 26.2 | 26.4 | 25.3 | 24.7 | 23.5 | 23.1 | 23.1 |
| Absolute minimum temperature (°C) | 18.2 | 19.6 | 22.0 | 22.8 | 23.4 | 24.9 | 24.6 | 24.3 | 23.5 | 22.2 | 22.5 | 22.3 |
| 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 | 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) | 8.6 | 9.1 | 9.8 | 10.3 | 9.2 | 10.8 | 9.8 | 10.8 | 8.9 | 8.2 | 6.8 | 6.9 |
| Precipitation (mm) | 160 | 159 | 77 | 104 | 158 | 18 | 15 | 41 | 137 | 405 | 481 | 463 |
| Sunny days | 6 | 8 | 5 | 5 | 9 | 8 | 11 | 10 | 1 | 0 | 0 | 0 |
| Rainy days | 25 | 20 | 26 | 25 | 22 | 22 | 20 | 21 | 29 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ihalawewa is at