Average annual temperature is 26.9 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: 19.3 °C
Number of sunny days: 61 days
Number of rainy days: 304 days
Look at detailed online map of Puttalam
* Weather data for Puttalam 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) | 30.1 | 32.0 | 32.8 | 34.9 | 31.9 | 30.9 | 32.3 | 33.8 | 30.8 | 31.5 | 32.1 | 30.9 |
| Average daytime temperature (°C) | 29.2 | 30.2 | 31.3 | 31.9 | 30.4 | 30.1 | 30.3 | 32.1 | 29.6 | 29.7 | 29.8 | 29.8 |
| Average temperature (°C) | 24.7 | 25.5 | 27.0 | 27.6 | 28.1 | 28.2 | 27.9 | 28.4 | 27.2 | 26.2 | 25.7 | 26.0 |
| Average night temperature (°C) | 21.3 | 21.8 | 23.8 | 24.7 | 26.0 | 26.6 | 26.2 | 25.9 | 24.9 | 23.7 | 23.2 | 23.5 |
| Absolute minimum temperature (°C) | 19.3 | 19.7 | 22.2 | 23.4 | 23.8 | 24.6 | 25.0 | 24.4 | 24.0 | 22.3 | 22.6 | 22.9 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 11.9 | 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) | 9.3 | 10.1 | 11.0 | 10.6 | 9.5 | 10.9 | 9.9 | 11.2 | 9.8 | 9.0 | 7.9 | 8.5 |
| Precipitation (mm) | 85 | 81 | 79 | 155 | 149 | 83 | 45 | 28 | 215 | 303 | 488 | 254 |
| Sunny days | 16 | 14 | 4 | 0 | 0 | 1 | 9 | 17 | 0 | 0 | 0 | 0 |
| Rainy days | 15 | 14 | 27 | 30 | 31 | 29 | 22 | 14 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Puttalam is at