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 39–59°F, 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 68–77°F, 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 55–71°F, 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–-34.9°F, 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. 51.8°F / Annual rainfall: approx. 1318 mm / Summer humidity: 70%–80% / Rainiest month: July
Ganghwa Island monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
24.6°F
16.3
February
29.1°F
16.5
March
39.6°F
43.8
April
51.3°F
55.5
May
59.2°F
82.5
June
68°F
171
July
74.8°F
335.2
August
77.5°F
257.9
September
71.2°F
174.8
October
55°F
84.2
November
42.6°F
55.2
December
28.2°F
25.9
Ganghwa Island weather for the next seven days
12/19
Friday
Patchy rain nearby
43.9°F/34.5°F
12/20
Saturday
Patchy rain nearby
47.3°F/34.3°F
12/21
Sunday
Sunny
32.9°F/27.4°F
12/22
Monday
Sunny
35.1°F/24.9°F
12/23
Tuesday
Moderate rain
38.5°F/30.8°F
12/24
Wednesday
Light freezing rain
34.5°F/26.4°F
12/25
Thursday
Sunny
35.3°F/26.3°F
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