Average annual temperature is 15.7 °C
Absolute maximum temperature: 23.7 °C
Absolute minimum temperature: 5.4 °C
Number of sunny days: 32 days
Number of rainy days: 333 days
Look at detailed online map of Letchamiya
* Weather data for Letchamiya 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) | 19.7 | 21.3 | 22.0 | 22.7 | 23.7 | 22.5 | 20.8 | 22.4 | 20.5 | 20.9 | 20.8 | 21.0 |
| Average daytime temperature (°C) | 18.8 | 19.5 | 20.0 | 21.1 | 20.7 | 20.2 | 18.9 | 20.8 | 18.8 | 19.2 | 19.6 | 19.3 |
| Average temperature (°C) | 14.1 | 14.8 | 15.3 | 16.1 | 16.9 | 16.6 | 15.5 | 16.1 | 15.6 | 15.6 | 15.6 | 15.7 |
| Average night temperature (°C) | 9.6 | 10.0 | 11.1 | 11.7 | 13.9 | 14.3 | 13.3 | 12.4 | 13.7 | 12.8 | 12.1 | 12.5 |
| Absolute minimum temperature (°C) | 5.4 | 7.0 | 9.4 | 9.9 | 11.8 | 13.4 | 11.5 | 10.3 | 11.3 | 10.4 | 9.4 | 8.9 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 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) | 9.2 | 9.4 | 9.2 | 9.8 | 8.6 | 9.6 | 8.4 | 10.2 | 6.5 | 6.3 | 6.8 | 7.2 |
| Precipitation (mm) | 63 | 62 | 117 | 145 | 93 | 64 | 161 | 103 | 251 | 515 | 555 | 303 |
| Sunny days | 7 | 6 | 4 | 1 | 1 | 1 | 3 | 3 | 0 | 2 | 0 | 4 |
| Rainy days | 24 | 22 | 27 | 29 | 30 | 29 | 28 | 28 | 30 | 29 | 30 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Letchamiya is at