Average annual temperature is 12.2 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: -17.7 °C
Number of sunny days: 187 days
Number of rainy days: 168 days
Number of snow days: 10 days
Look at detailed online map of Ganghwa-gun
* Weather data for Ganghwa-gun 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) | 11.1 | 8.9 | 21.0 | 23.6 | 27.7 | 31.7 | 32.5 | 33.5 | 30.7 | 22.8 | 21.8 | 14.9 |
| Average daytime temperature (°C) | 1.3 | 5.1 | 12.0 | 16.3 | 21.4 | 25.0 | 28.5 | 29.2 | 26.3 | 19.4 | 9.7 | 4.0 |
| Average temperature (°C) | -3.1 | 0.2 | 6.6 | 11.6 | 16.9 | 21.4 | 25.1 | 25.6 | 22.2 | 14.5 | 5.1 | -0.1 |
| Average night temperature (°C) | -7.4 | -3.6 | 2.1 | 8.2 | 13.2 | 18.4 | 22.5 | 22.5 | 18.8 | 10.1 | 1.0 | -3.9 |
| Absolute minimum temperature (°C) | -17.7 | -6.8 | -3.2 | 2.7 | 7.0 | 15.5 | 19.3 | 17.3 | 13.7 | 5.6 | -6.9 | -14.4 |
| 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 | 14.0 | 13.0 | 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) | 6.9 | 8.4 | 9.0 | 7.4 | 9.0 | 9.2 | 7.9 | 8.5 | 7.7 | 8.2 | 6.9 | 6.3 |
| Precipitation (mm) | 35 | 5 | 32 | 124 | 171 | 179 | 328 | 347 | 107 | 44 | 89 | 67 |
| Sunny days | 21 | 25 | 24 | 13 | 19 | 10 | 6 | 8 | 9 | 18 | 13 | 21 |
| Rainy days | 5 | 2 | 7 | 17 | 12 | 20 | 25 | 23 | 21 | 13 | 15 | 8 |
| Snow days | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The largest precipitation sum in Ganghwa-gun is at