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Jeju

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Jeju Weather and climate

Data source：Meteostat
Update date：2025-09

Jeju year round climate
  • Spring (March–May): Average 10.8–18.1°C, mild and comfortable climate with abundant rainfall, suitable for hiking and flower viewing. Common activities: Hiking, flower viewing, cycling. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): Average 22.5–28.5°C, hot and humid, with more rainfall and occasional typhoons. Common activities: Beach activities, water sports, exploring volcanic terrain. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 14.4–25.3°C, pleasant climate with higher rainfall, especially in September. Common activities: Maple viewing, hiking, enjoying local cuisine. Recommended clothing: Comfortable jacket, long-sleeved shirt, comfortable shoes.
  • Winter (December–February): Average 6.6–8.2°C, cold and dry, with occasional snowfall. Common activities: Onsen bathing, visiting indoor attractions, enjoying warm food. Recommended clothing: Warm jacket, sweater, scarf, hat, gloves.
Jeju climatological average

Annual average temperature: approx. 17°C / Annual rainfall: approx. 1705 mm / Summer humidity: 70%–80% / Rainiest month: September

Jeju monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.6°C
99
February
7.3°C
97.5
March
10.8°C
114.9
April
14.9°C
121.6
May
18.1°C
148.8
June
22.5°C
215.7
July
27.6°C
207.3
August
28.5°C
109.5
September
25.3°C
225.8
October
19.2°C
87.8
November
14.4°C
201.5
December
8.2°C
76
Jeju weather for the next seven days
10/15
Wednesday
Moderate rain
25.3°C/21.8°C
10/16
Thursday
Moderate rain
22.8°C/21.2°C
10/17
Friday
Patchy rain nearby
24.5°C/21.3°C
10/18
Saturday
Patchy rain nearby
21.6°C/18.7°C
10/19
Sunday
Patchy rain nearby
19°C/16.5°C
10/20
Monday
Sunny
16.4°C/13.7°C
10/21
Tuesday
Patchy rain nearby
17.4°C/15.4°C

Jeju FAQ

What is the best month to go to Jeju Island?
The ideal times to visit Jeju Island are Spring (April-May) and Autumn (September-October). These months offer pleasant weather perfect for exploring, vibrant blooming flowers in spring, and comfortable temperatures for enjoying the coastline in fall. Summer (June-August) is also popular for beach activities and festivals, though it can be warmer and busier.
How many days in Jeju is enough?
For a first-time visitor to Jeju Island, a minimum of 3 to 4 days is recommended to see the highlights. To experience the diverse attractions more thoroughly and enjoy a leisurely pace, 5 to 7 days is ideal. This longer duration allows for deeper exploration of natural wonders like Hallasan Mountain and coastal areas, as well as experiencing local culture without feeling rushed.
Can US citizens go to Jeju Island?
US citizens can generally enter Jeju Island visa-free for tourism. However, it is essential to check the latest K-ETA (Korea Electronic Travel Authorization) requirements for your specific entry and ensure you meet all necessary documentation for travel to South Korea.
Is Jeju Island a nice place to visit?
Jeju Island is a unique and beloved destination within South Korea, often referred to as 'South Korea's Hawaii'. It offers a relaxing and romantic holiday experience with stunning natural landscapes, volcanic craters, beautiful beaches, and a distinct local culture that makes it a wonderful place to visit.
What are some popular activities on Jeju Island?
Popular activities on Jeju Island include hiking Hallasan Mountain, exploring the volcanic cones (oreums) like Seongsan Ilchulbong, visiting stunning waterfalls such as Cheonjiyeon and Jeongbang, relaxing on beautiful beaches like Hyeopjae, and experiencing the unique local cuisine and culture.