Average annual temperature is 27.5 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days: 87 days
Number of rainy days: 278 days
Look at detailed online map of Sinnaittimadu
* Weather data for Sinnaittimadu 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 | 30.1 | 34.1 | 37.3 | 37.5 | 38.6 | 38.8 | 38.8 | 36.3 | 35.4 | 31.0 | 32.3 |
| Average daytime temperature (°C) | 27.3 | 28.4 | 31.1 | 33.9 | 33.9 | 35.5 | 35.6 | 36.7 | 34.4 | 32.3 | 29.2 | 28.4 |
| Average temperature (°C) | 24.7 | 25.1 | 26.8 | 28.3 | 28.5 | 30.2 | 29.8 | 29.6 | 28.7 | 26.9 | 25.7 | 25.7 |
| Average night temperature (°C) | 22.4 | 22.4 | 23.7 | 24.3 | 25.3 | 26.6 | 26.3 | 25.5 | 25.5 | 23.8 | 23.4 | 23.8 |
| Absolute minimum temperature (°C) | 20.5 | 20.6 | 22.6 | 23.0 | 23.1 | 25.3 | 25.3 | 24.5 | 24.0 | 23.0 | 22.7 | 23.1 |
| 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) | 9.4 | 10.3 | 11.0 | 10.7 | 9.1 | 10.5 | 9.5 | 11.0 | 10.3 | 9.9 | 7.8 | 7.6 |
| Precipitation (mm) | 110 | 142 | 49 | 73 | 92 | 28 | 25 | 103 | 80 | 239 | 465 | 339 |
| Sunny days | 14 | 13 | 8 | 9 | 7 | 10 | 11 | 10 | 1 | 4 | 0 | 0 |
| Rainy days | 17 | 15 | 23 | 21 | 24 | 20 | 20 | 21 | 29 | 27 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sinnaittimadu is at