Average annual temperature is 27.7 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 21.7 °C
Number of sunny days: 82 days
Number of rainy days: 283 days
Look at detailed online map of Janakapura
* Weather data for Janakapura 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) | 28.2 | 29.2 | 32.6 | 35.4 | 36.0 | 37.3 | 38.3 | 38.0 | 36.0 | 34.7 | 30.2 | 32.7 |
| Average daytime temperature (°C) | 26.9 | 27.7 | 29.6 | 31.4 | 33.3 | 35.0 | 35.7 | 36.5 | 34.3 | 31.5 | 28.8 | 28.4 |
| Average temperature (°C) | 25.3 | 25.8 | 27.0 | 28.1 | 28.7 | 30.1 | 30.0 | 29.7 | 28.6 | 26.9 | 26.1 | 26.2 |
| Average night temperature (°C) | 23.9 | 24.0 | 24.8 | 25.4 | 25.9 | 26.9 | 26.6 | 25.8 | 25.6 | 24.2 | 24.0 | 24.4 |
| Absolute minimum temperature (°C) | 22.1 | 21.7 | 23.7 | 24.1 | 24.0 | 25.9 | 25.6 | 24.8 | 24.3 | 23.5 | 23.1 | 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) | 9.2 | 10.2 | 10.8 | 10.6 | 9.2 | 10.4 | 9.5 | 11.0 | 10.1 | 9.9 | 7.8 | 7.8 |
| Precipitation (mm) | 136 | 89 | 53 | 85 | 125 | 21 | 31 | 99 | 118 | 298 | 541 | 355 |
| Sunny days | 10 | 13 | 9 | 12 | 8 | 9 | 10 | 7 | 3 | 1 | 0 | 0 |
| Rainy days | 21 | 15 | 22 | 18 | 23 | 21 | 21 | 24 | 27 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Janakapura is at