Average annual temperature is 27.4 °C
Absolute maximum temperature: 39.2 °C
Absolute minimum temperature: 20.0 °C
Number of sunny days: 95 days
Number of rainy days: 270 days
Look at detailed online map of Katchilaimadu
* Weather data for Katchilaimadu 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) | 28.9 | 30.7 | 35.2 | 37.8 | 37.8 | 38.0 | 38.7 | 39.2 | 36.7 | 35.2 | 31.3 | 32.0 |
| Average daytime temperature (°C) | 27.6 | 28.8 | 31.7 | 34.5 | 33.7 | 35.3 | 35.4 | 36.7 | 34.4 | 32.6 | 29.3 | 28.5 |
| Average temperature (°C) | 24.4 | 24.9 | 26.7 | 28.2 | 28.4 | 30.1 | 29.7 | 29.6 | 28.7 | 26.8 | 25.5 | 25.5 |
| Average night temperature (°C) | 21.9 | 22.1 | 23.3 | 24.0 | 25.2 | 26.5 | 26.2 | 25.5 | 25.4 | 23.7 | 23.2 | 23.5 |
| Absolute minimum temperature (°C) | 20.0 | 20.1 | 22.4 | 22.4 | 23.1 | 25.3 | 25.2 | 24.5 | 24.0 | 22.6 | 22.6 | 23.0 |
| 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 | 11.8 | 12.1 | 12.3 | 12.5 | 12.6 | 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) | 9.3 | 10.2 | 11.0 | 10.6 | 8.9 | 10.5 | 9.5 | 10.8 | 10.2 | 9.7 | 7.5 | 7.3 |
| Precipitation (mm) | 109 | 113 | 50 | 93 | 90 | 30 | 25 | 88 | 65 | 269 | 471 | 327 |
| Sunny days | 15 | 16 | 8 | 8 | 7 | 8 | 16 | 12 | 1 | 4 | 0 | 0 |
| Rainy days | 16 | 12 | 23 | 22 | 24 | 22 | 15 | 19 | 29 | 27 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Katchilaimadu is at