Average annual temperature is 13.6 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -20.9 °C
Number of sunny days: 291 days
Number of rainy days: 68 days
Number of snow days: 6 days
Look at detailed online map of Siway
* Weather data for Siway Afghanistan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 10.5 | 17.4 | 17.7 | 23.7 | 29.8 | 35.8 | 36.2 | 34.3 | 33.7 | 26.4 | 20.5 | 13.8 |
| Average daytime temperature (°C) | 0.0 | 9.8 | 13.8 | 18.7 | 25.2 | 31.6 | 32.0 | 31.7 | 28.6 | 21.8 | 15.3 | 11.0 |
| Average temperature (°C) | -4.6 | 4.0 | 8.1 | 12.3 | 18.4 | 24.5 | 25.3 | 25.0 | 21.2 | 15.1 | 9.2 | 4.6 |
| Average night temperature (°C) | -9.7 | -2.0 | 2.6 | 5.1 | 10.6 | 15.9 | 17.6 | 17.2 | 13.1 | 8.2 | 3.3 | -1.1 |
| Absolute minimum temperature (°C) | -20.9 | -13.5 | 0.0 | 0.3 | 6.1 | 9.0 | 13.0 | 11.8 | 7.7 | 4.3 | -1.0 | -6.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.1 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.3 | 9.6 | 9.3 | 11.5 | 12.4 | 13.0 | 12.6 | 12.3 | 11.1 | 10.4 | 9.2 | 8.6 |
| Precipitation (mm) | 58 | 17 | 112 | 31 | 22 | 0 | 6 | 0 | 0 | 0 | 8 | 4 |
| Sunny days | 21 | 18 | 13 | 21 | 22 | 29 | 26 | 31 | 30 | 29 | 24 | 27 |
| Rainy days | 4 | 10 | 18 | 9 | 9 | 1 | 5 | 0 | 0 | 2 | 6 | 4 |
| Snow days | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siway is at