Average annual temperature is 24.5 °C
Absolute maximum temperature: 42.6 °C
Absolute minimum temperature: 5.1 °C
Number of sunny days: 230 days
Number of rainy days: 135 days
Look at detailed online map of Siwānagar
* Weather data for Siwānagar Nepal is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 24.7 | 30.3 | 33.9 | 41.5 | 40.0 | 42.6 | 35.1 | 34.4 | 34.8 | 33.4 | 30.5 | 28.0 |
| Average daytime temperature (°C) | 20.0 | 25.9 | 30.3 | 35.2 | 35.9 | 38.3 | 32.6 | 32.4 | 32.5 | 30.1 | 27.6 | 24.3 |
| Average temperature (°C) | 13.4 | 18.7 | 23.2 | 27.8 | 29.7 | 33.0 | 29.1 | 28.8 | 28.6 | 24.5 | 20.6 | 16.7 |
| Average night temperature (°C) | 8.4 | 12.1 | 16.0 | 19.9 | 23.3 | 27.6 | 26.0 | 25.8 | 25.4 | 19.5 | 14.5 | 10.2 |
| Absolute minimum temperature (°C) | 5.1 | 9.3 | 13.8 | 15.9 | 19.7 | 24.9 | 25.1 | 23.8 | 23.2 | 15.4 | 12.9 | 7.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.8 | 13.7 | 13.1 | 12.3 | 11.5 | 10.8 | 10.4 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.7 | 9.7 | 10.1 | 10.1 | 10.4 | 10.9 | 9.0 | 8.6 | 9.4 | 9.4 | 8.8 | 8.3 |
| Precipitation (mm) | 0 | 0 | 41 | 19 | 34 | 222 | 626 | 223 | 150 | 46 | 1 | 2 |
| Sunny days | 30 | 27 | 23 | 26 | 24 | 18 | 1 | 1 | 1 | 21 | 29 | 29 |
| Rainy days | 1 | 1 | 8 | 4 | 7 | 12 | 30 | 30 | 29 | 10 | 1 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siwānagar is at