Average annual temperature is 24.5 °C
Absolute maximum temperature: 43.0 °C
Absolute minimum temperature: 6.7 °C
Number of sunny days: 214 days
Number of rainy days: 151 days
Look at detailed online map of Siswā
* Weather data for Siswā 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) | 24.5 | 28.6 | 32.8 | 41.8 | 40.5 | 43.0 | 34.6 | 34.6 | 35.2 | 32.6 | 29.3 | 27.0 |
| Average daytime temperature (°C) | 19.7 | 25.0 | 29.7 | 35.4 | 35.0 | 37.7 | 32.1 | 31.8 | 32.4 | 29.7 | 27.1 | 23.4 |
| Average temperature (°C) | 13.7 | 18.8 | 23.1 | 27.7 | 29.3 | 32.0 | 28.9 | 28.4 | 28.7 | 24.9 | 21.2 | 17.1 |
| Average night temperature (°C) | 9.1 | 12.8 | 16.7 | 19.7 | 23.5 | 26.2 | 26.1 | 25.9 | 25.6 | 20.9 | 15.9 | 11.7 |
| Absolute minimum temperature (°C) | 6.7 | 9.7 | 15.2 | 16.1 | 20.3 | 23.4 | 25.0 | 23.6 | 23.8 | 17.1 | 14.1 | 8.6 |
| 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) | 7.6 | 9.6 | 10.1 | 10.2 | 10.6 | 10.9 | 8.6 | 7.8 | 9.8 | 9.5 | 8.9 | 8.4 |
| Precipitation (mm) | 0 | 0 | 28 | 8 | 33 | 231 | 449 | 225 | 138 | 64 | 0 | 0 |
| Sunny days | 29 | 27 | 19 | 23 | 17 | 13 | 1 | 0 | 6 | 18 | 30 | 31 |
| Rainy days | 2 | 1 | 12 | 7 | 14 | 17 | 30 | 31 | 24 | 13 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siswā is at