So fulfilling and fun from morning till night! Definitely a great value! 😂 Perfect for the whole family! Our tour guide, Rachel, was so kind and even helped me take photos!
Anonymous User
Family
Ganghwa Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Ganghwa Island year round climate
Spring (March–May): Average 4.2–15.1°C, mild climate gradually warming, rainfall gradually increasing. Common activities: picnics, flower viewing, cycling. Recommended clothing: light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 20.0–25.3°C, hot and humid, higher rainfall, especially in July. Common activities: swimming at the beach, water sports, island exploration. Recommended clothing: light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 12.8–21.8°C, cool and comfortable, sunny weather, decreased rainfall. Common activities: maple leaf viewing, hiking, harvesting agricultural products. Recommended clothing: comfortable long-sleeved shirts, light jacket, comfortable shoes.
Winter (December–February): Average -4.1–-1.6°C, cold and dry, low rainfall. Common activities: enjoying winter scenery, onsen experience. Recommended clothing: warm coat, hat, scarf, gloves.
Ganghwa Island climatological average
Annual average temperature: approx. 11°C / Annual rainfall: approx. 1318 mm / Summer humidity: 70%–80% / Rainiest month: July
Ganghwa Island monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-4.1°C
16.3
February
-1.6°C
16.5
March
4.2°C
43.8
April
10.7°C
55.5
May
15.1°C
82.5
June
20°C
171
July
23.8°C
335.2
August
25.3°C
257.9
September
21.8°C
174.8
October
12.8°C
84.2
November
5.9°C
55.2
December
-2.1°C
25.9
Ganghwa Island weather for the next seven days
12/19
Friday
Patchy rain nearby
6.6°C/1.4°C
12/20
Saturday
Patchy rain nearby
8.5°C/1.3°C
12/21
Sunday
Sunny
0.5°C/-2.5°C
12/22
Monday
Sunny
1.7°C/-3.9°C
12/23
Tuesday
Moderate rain
3.6°C/-0.7°C
12/24
Wednesday
Light freezing rain
1.4°C/-3.1°C
12/25
Thursday
Sunny
1.8°C/-3.2°C
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