Our tour guide, Lena, was wonderful! She was so patient and her friendly smile was so comforting. She was very concerned when she learned my mother was injured, and she was happy to share what she knew. It's also worth mentioning that she tirelessly explained things in both Chinese and English! Thank you, Lena!
Anonymous User
Family
Namhansanseong Fortress Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Namhansanseong Fortress year round climate
Spring (March–May): Average 45–64°F, mild climate, but still chilly in early spring, rainfall gradually increases. Common activities: Hiking, enjoying mountain scenery. Recommended clothing: Spring jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 73–81°F, hot and humid, abundant rainfall, especially in July. Common activities: Avoiding the heat, exploring the mountain city. Recommended clothing: Breathable and light clothing, sun hat, rain gear.
Autumn (September–November): Average 46–74°F, pleasant climate, cool and comfortable, less rainfall. Common activities: Hiking, appreciating autumn foliage. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -35–33°F, cold and dry, occasional snowfall. Common activities: Experiencing the tranquil winter scenery of the mountain city, suitable for photography. Recommended clothing: Warm jacket, hat, gloves, scarf.
Namhansanseong Fortress climatological average
Annual average temperature: approx. 56.1°F / Annual rainfall: approx. 1367 mm / Summer humidity: 70%–80% / Rainiest month: July
Namhansanseong Fortress monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
28.4°F
15.8
February
34°F
19.4
March
45.5°F
37.3
April
57.2°F
56.4
May
64.8°F
93.8
June
73.8°F
204.8
July
79.9°F
326
August
81.3°F
264.3
September
74.3°F
169.8
October
58.5°F
86.6
November
46.6°F
63.3
December
30.4°F
30.2
Namhansanseong Fortress weather for the next seven days
3/30
Monday
Patchy rain nearby
66.4°F/51.9°F
3/31
Tuesday
Moderate rain
63.2°F/51°F
4/1
Wednesday
Sunny
62.5°F/49.5°F
4/2
Thursday
Sunny
62.8°F/45.1°F
4/3
Friday
Sunny
65°F/47.8°F
4/4
Saturday
Sunny
60°F/48.7°F
4/5
Sunday
Patchy rain nearby
61.8°F/43.4°F
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