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Sejong

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Sejong Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Sejong year round climate

  • Spring (March–May): 44–64°F on average, mild climate with gradually increasing rainfall. March and April tend to be drier. Common activities: Picnics, outings, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): 71–80°F on average, hot and humid with abundant rainfall, especially in July. Common activities: Indoor activities, visiting summer resorts. Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): 44–73°F on average, comfortable and pleasant with decreasing rainfall and dry weather. Common activities: Maple leaf viewing, hiking. Recommended clothing: Light jacket or cardigan, comfortable trousers.
  • Winter (December–February): -33–33°F on average, cold and dry with occasional snowfall. Common activities: Skiing (requires travel to surrounding areas), indoor leisure activities. Recommended clothing: Warm jacket, hat, scarf, gloves.

Sejong climatological average

Annual average temperature: approx. 55.4°F / Annual rainfall: approx. 1252 mm / Summer humidity: 70%–80% / Rainiest month: July

Sejong monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
28.6°F
21.5
February
33.6°F
24
March
44.6°F
53.5
April
56.3°F
60.3
May
64.4°F
87.3
June
73°F
131.9
July
78.4°F
331.8
August
80.1°F
230.1
September
73°F
161.4
October
57.4°F
67.4
November
46°F
51.3
December
31.6°F
31.8

Sejong weather for the next seven days

5/31
Sunday
Sunny
88.4°F/56.2°F
6/1
Monday
Partly Cloudy
84.8°F/59.4°F
6/2
Tuesday
Partly Cloudy
76.3°F/61.6°F
6/3
Wednesday
Sunny
89.2°F/59.3°F
6/4
Thursday
Patchy rain nearby
87.7°F/63.1°F
6/5
Friday
Patchy rain nearby
84.6°F/61.7°F
6/6
Saturday
Partly Cloudy
80.1°F/61.5°F