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Sejong

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Travel Info
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Travel Info

Top 10 Must-Do Experiences and Attractions in 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): 7–18°C 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): 22–27°C 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): 7–23°C 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): -1–1°C 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. 13°C / Annual rainfall: approx. 1252 mm / Summer humidity: 70%–80% / Rainiest month: July

Sejong monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-1.9°C
21.5
February
0.9°C
24
March
7°C
53.5
April
13.5°C
60.3
May
18°C
87.3
June
22.8°C
131.9
July
25.8°C
331.8
August
26.7°C
230.1
September
22.8°C
161.4
October
14.1°C
67.4
November
7.8°C
51.3
December
-0.2°C
31.8

Sejong weather for the next seven days

12/22
Monday
Sunny
4.9°C/-3.6°C
12/23
Tuesday
Moderate rain
9.6°C/-0.1°C
12/24
Wednesday
Patchy rain nearby
6.9°C/2.1°C
12/25
Thursday
Sunny
2.1°C/-3.2°C
12/26
Friday
Sunny
-1.3°C/-5.8°C
12/27
Saturday
Overcast
1.4°C/-6°C
12/28
Sunday
Partly Cloudy
5.5°C/-3.4°C

Sejong Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best time to visit is mainly from the end of October to the beginning of November, when maple leaves and ginkgo trees are in beautiful bloom.

Which attractions are must-sees?

Must-see attractions include Gyeongbokgung Palace, Changdeokgung Palace Secret Garden, Sungkyunkwan Myeongryundang Hall, etc. These places have rich history and culture and beautiful autumn scenery.