Average annual temperature is 14.2 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -14.5 °C
Number of sunny days: 198 days
Number of rainy days: 161 days
Number of snow days: 6 days
Look at detailed online map of Siyŏ-gol
* Weather data for Siyŏ-gol South Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 17.6 | 16.5 | 24.6 | 28.5 | 33.7 | 35.3 | 35.0 | 35.3 | 30.4 | 23.2 | 27.2 | 18.9 |
| Average daytime temperature (°C) | 5.7 | 9.2 | 18.0 | 19.8 | 23.9 | 29.5 | 30.1 | 30.9 | 26.7 | 20.8 | 13.2 | 7.3 |
| Average temperature (°C) | 0.0 | 3.3 | 10.6 | 13.4 | 18.4 | 23.5 | 25.8 | 26.7 | 22.6 | 15.0 | 7.5 | 2.5 |
| Average night temperature (°C) | -3.9 | -1.2 | 4.3 | 7.6 | 13.5 | 18.6 | 22.5 | 23.3 | 19.2 | 10.3 | 3.0 | -1.2 |
| Absolute minimum temperature (°C) | -14.5 | -5.4 | -3.5 | 1.7 | 7.1 | 14.8 | 18.0 | 19.8 | 14.6 | 4.8 | -5.8 | -10.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.7 | 7.6 | 8.9 | 8.2 | 8.1 | 9.7 | 7.1 | 9.3 | 7.4 | 8.8 | 7.8 | 6.5 |
| Precipitation (mm) | 46 | 20 | 44 | 85 | 148 | 161 | 374 | 356 | 247 | 8 | 67 | 112 |
| Sunny days | 25 | 18 | 21 | 15 | 17 | 13 | 5 | 10 | 10 | 22 | 20 | 22 |
| Rainy days | 4 | 8 | 10 | 15 | 14 | 17 | 26 | 21 | 20 | 9 | 10 | 7 |
| Snow days | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Siyŏ-gol is at