Average annual temperature is 27.0 °C
Absolute maximum temperature: 38.9 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 65 days
Number of rainy days: 300 days
Look at detailed online map of Mahadiulwewa Stage 1
* Weather data for Mahadiulwewa Stage 1 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) | 29.1 | 30.3 | 34.3 | 36.6 | 36.2 | 35.7 | 37.8 | 38.9 | 36.4 | 34.1 | 31.6 | 32.1 |
| Average daytime temperature (°C) | 27.6 | 28.7 | 31.2 | 33.7 | 33.4 | 34.6 | 34.8 | 36.5 | 34.0 | 32.1 | 29.5 | 28.7 |
| Average temperature (°C) | 24.1 | 24.6 | 26.3 | 27.6 | 28.1 | 29.5 | 29.2 | 29.2 | 27.9 | 26.3 | 25.2 | 25.3 |
| Average night temperature (°C) | 21.2 | 21.3 | 22.9 | 23.8 | 25.0 | 26.0 | 25.8 | 25.1 | 24.7 | 23.3 | 22.8 | 23.1 |
| Absolute minimum temperature (°C) | 19.4 | 18.9 | 22.1 | 22.3 | 23.2 | 24.8 | 24.9 | 24.1 | 23.5 | 22.4 | 22.4 | 22.5 |
| 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 | 12.6 | 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) | 9.1 | 10.0 | 10.8 | 10.6 | 9.1 | 10.8 | 9.4 | 10.8 | 9.7 | 9.8 | 7.6 | 8.1 |
| Precipitation (mm) | 141 | 91 | 65 | 112 | 117 | 26 | 33 | 86 | 154 | 497 | 638 | 398 |
| Sunny days | 12 | 12 | 4 | 5 | 8 | 5 | 8 | 8 | 2 | 1 | 0 | 0 |
| Rainy days | 19 | 16 | 27 | 25 | 23 | 25 | 23 | 23 | 28 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mahadiulwewa Stage 1 is at