Average annual temperature is 14.1 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: -14.2 °C
Number of sunny days: 190 days
Number of rainy days: 165 days
Number of snow days: 10 days
Look at detailed online map of Gasan
* Weather data for Gasan 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) | 14.7 | 12.1 | 26.2 | 28.6 | 30.8 | 36.5 | 33.1 | 34.9 | 31.0 | 23.1 | 25.1 | 18.7 |
| Average daytime temperature (°C) | 4.8 | 8.1 | 17.0 | 19.8 | 24.6 | 28.9 | 29.4 | 30.9 | 27.0 | 20.5 | 12.6 | 7.1 |
| Average temperature (°C) | -0.3 | 2.0 | 9.4 | 13.5 | 18.7 | 23.1 | 25.7 | 26.7 | 22.8 | 15.1 | 8.0 | 3.0 |
| Average night temperature (°C) | -4.8 | -2.7 | 3.4 | 8.0 | 13.8 | 18.8 | 22.9 | 23.5 | 19.5 | 10.3 | 3.4 | -0.8 |
| Absolute minimum temperature (°C) | -14.2 | -6.3 | -4.5 | 0.8 | 5.4 | 15.1 | 20.7 | 18.1 | 13.3 | 5.1 | -4.8 | -11.3 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 7.4 | 9.0 | 7.7 | 8.2 | 9.8 | 6.9 | 9.3 | 7.2 | 8.6 | 7.0 | 5.6 |
| Precipitation (mm) | 35 | 5 | 22 | 69 | 152 | 227 | 612 | 349 | 232 | 13 | 89 | 129 |
| Sunny days | 19 | 22 | 23 | 15 | 18 | 12 | 5 | 7 | 12 | 24 | 18 | 15 |
| Rainy days | 9 | 5 | 8 | 15 | 13 | 18 | 26 | 24 | 18 | 7 | 11 | 11 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The best time to visit Gasan during the most sunny months:
The largest precipitation sum in Gasan is at