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
10/18
Saturday
Moderate rain
65.2°F/59.9°F
10/19
Sunday
Patchy rain nearby
67.4°F/53.1°F
10/20
Monday
Partly Cloudy
61.6°F/48.7°F
10/21
Tuesday
Sunny
60.7°F/48.5°F
10/22
Wednesday
Sunny
64.9°F/47.8°F
10/23
Thursday
Partly Cloudy
67.2°F/55.7°F
10/24
Friday
Sunny
67°F/54.4°F
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