Average annual temperature is 13.3 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -17.1 °C
Number of sunny days: 184 days
Number of rainy days: 168 days
Number of snow days: 13 days
Look at detailed online map of Galcheon
* Weather data for Galcheon 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) | 13.1 | 11.1 | 25.0 | 27.0 | 32.3 | 35.0 | 33.4 | 34.0 | 30.4 | 22.1 | 24.0 | 17.8 |
| Average daytime temperature (°C) | 2.6 | 6.7 | 15.7 | 19.2 | 24.7 | 28.1 | 29.6 | 30.4 | 26.5 | 19.4 | 10.7 | 5.2 |
| Average temperature (°C) | -2.2 | 1.2 | 8.8 | 13.1 | 18.8 | 22.7 | 25.8 | 26.3 | 22.6 | 14.6 | 6.1 | 1.3 |
| Average night temperature (°C) | -7.1 | -2.9 | 3.2 | 8.0 | 13.6 | 18.4 | 22.9 | 22.9 | 19.3 | 10.1 | 1.5 | -2.4 |
| Absolute minimum temperature (°C) | -17.1 | -6.9 | -3.6 | 1.4 | 6.0 | 14.2 | 20.2 | 17.1 | 12.9 | 4.3 | -7.5 | -13.9 |
| 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) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 10.2 | 9.7 |
| 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) | 7.2 | 8.1 | 9.3 | 7.8 | 8.5 | 9.8 | 7.5 | 8.6 | 7.3 | 8.3 | 7.2 | 5.9 |
| Precipitation (mm) | 32 | 2 | 31 | 75 | 124 | 148 | 498 | 277 | 235 | 29 | 79 | 94 |
| Sunny days | 19 | 23 | 22 | 15 | 19 | 12 | 5 | 6 | 10 | 19 | 17 | 17 |
| Rainy days | 5 | 4 | 9 | 15 | 12 | 18 | 26 | 25 | 20 | 12 | 13 | 9 |
| Snow days | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The largest precipitation sum in Galcheon is at