Average annual temperature is 14.7 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -11.3 °C
Number of sunny days: 183 days
Number of rainy days: 180 days
Number of snow days: 2 days
Look at detailed online map of Gwisan
* Weather data for Gwisan 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) | 16.3 | 13.9 | 23.0 | 24.1 | 25.1 | 29.7 | 32.1 | 34.6 | 30.4 | 24.7 | 25.0 | 18.4 |
| Average daytime temperature (°C) | 6.7 | 9.7 | 16.5 | 18.3 | 22.1 | 26.4 | 28.4 | 30.8 | 27.3 | 21.7 | 14.4 | 9.3 |
| Average temperature (°C) | 1.8 | 4.2 | 10.5 | 13.7 | 18.0 | 22.5 | 25.3 | 26.9 | 23.5 | 16.2 | 9.3 | 4.5 |
| Average night temperature (°C) | -2.3 | 0.1 | 5.6 | 9.5 | 14.7 | 19.5 | 23.0 | 23.7 | 20.3 | 11.6 | 5.0 | 0.7 |
| Absolute minimum temperature (°C) | -11.3 | -3.7 | -0.7 | 3.5 | 8.6 | 16.3 | 18.5 | 20.2 | 16.8 | 6.0 | -2.7 | -7.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.2 | 8.6 | 7.4 | 7.5 | 8.4 | 6.4 | 10.3 | 8.3 | 8.7 | 7.7 | 6.3 |
| Precipitation (mm) | 53 | 40 | 48 | 132 | 238 | 226 | 331 | 354 | 233 | 15 | 116 | 79 |
| Sunny days | 25 | 20 | 22 | 14 | 11 | 9 | 1 | 6 | 9 | 23 | 22 | 21 |
| Rainy days | 6 | 8 | 9 | 16 | 20 | 21 | 30 | 25 | 21 | 8 | 8 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Gwisan during the most sunny months:
The largest precipitation sum in Gwisan is at