Average annual temperature is 12.1 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -15.6 °C
Number of sunny days: 158 days
Number of rainy days: 190 days
Number of snow days: 17 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) | 15.2 | 11.8 | 20.8 | 24.0 | 28.6 | 30.4 | 30.5 | 32.3 | 28.9 | 20.6 | 21.9 | 16.0 |
| Average daytime temperature (°C) | 2.9 | 6.7 | 14.5 | 16.6 | 21.1 | 25.9 | 27.1 | 28.6 | 25.0 | 17.8 | 10.5 | 5.3 |
| Average temperature (°C) | -1.6 | 1.2 | 8.0 | 10.9 | 16.2 | 20.7 | 23.6 | 24.4 | 20.8 | 13.0 | 5.8 | 1.5 |
| Average night temperature (°C) | -5.5 | -3.1 | 2.6 | 5.6 | 11.7 | 16.4 | 20.7 | 20.9 | 17.5 | 8.9 | 1.3 | -1.8 |
| Absolute minimum temperature (°C) | -15.6 | -8.4 | -5.9 | -3.0 | 4.8 | 12.0 | 17.0 | 16.0 | 11.6 | 3.5 | -7.6 | -12.4 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 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) | 6.9 | 7.3 | 8.8 | 7.8 | 7.9 | 9.2 | 7.0 | 9.7 | 7.7 | 8.7 | 7.6 | 5.9 |
| Precipitation (mm) | 42 | 31 | 46 | 100 | 143 | 218 | 395 | 280 | 212 | 21 | 117 | 109 |
| Sunny days | 16 | 18 | 21 | 13 | 17 | 11 | 0 | 4 | 7 | 21 | 15 | 15 |
| Rainy days | 7 | 9 | 10 | 16 | 14 | 19 | 31 | 27 | 23 | 10 | 15 | 9 |
| Snow days | 8 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 |
The largest precipitation sum in Gasan is at