Average annual temperature is 12.5 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -18.1 °C
Number of sunny days: 191 days
Number of rainy days: 166 days
Number of snow days: 8 days
Look at detailed online map of Ganggosan
* Weather data for Ganggosan 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) | 11.9 | 9.8 | 23.2 | 27.3 | 28.1 | 34.2 | 33.0 | 34.2 | 30.6 | 22.2 | 23.2 | 15.8 |
| Average daytime temperature (°C) | 2.1 | 6.3 | 14.5 | 18.3 | 23.4 | 26.2 | 28.9 | 29.5 | 26.2 | 19.3 | 9.9 | 4.5 |
| Average temperature (°C) | -3.1 | 0.4 | 7.5 | 12.3 | 17.8 | 21.7 | 25.4 | 25.8 | 22.2 | 14.2 | 5.2 | 0.1 |
| Average night temperature (°C) | -7.8 | -4.0 | 1.9 | 7.6 | 13.1 | 18.1 | 22.7 | 22.7 | 19.0 | 9.9 | 1.1 | -3.8 |
| Absolute minimum temperature (°C) | -18.1 | -6.8 | -4.1 | 1.0 | 5.2 | 14.1 | 20.1 | 18.0 | 12.7 | 4.4 | -7.2 | -14.5 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.1 | 8.4 | 9.1 | 7.5 | 9.1 | 9.2 | 7.5 | 8.6 | 7.8 | 8.2 | 7.0 | 6.3 |
| Precipitation (mm) | 39 | 2 | 15 | 100 | 180 | 186 | 391 | 318 | 135 | 42 | 90 | 71 |
| Sunny days | 20 | 25 | 26 | 16 | 21 | 7 | 4 | 8 | 10 | 20 | 17 | 17 |
| Rainy days | 7 | 3 | 5 | 14 | 10 | 23 | 27 | 23 | 20 | 11 | 12 | 11 |
| Snow days | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
The largest precipitation sum in Ganggosan is at