We visited many places, and most of the attractions were by the sea, so don't miss them if you love the sea! Also, the speedboat ride on Udo Island was really fun~ The Blue Grotto is a cave carved by the waves, and you can go in and take a ride around it before coming out 😆 The best part was that Xiuxiu had a great personality, which made our experience even better!
Anonymous User
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Jeju Weather, Climate and Best Time to Visit
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
8/11
Tuesday
Sunny
27.9°C/24.5°C
8/12
Wednesday
Patchy rain nearby
26.1°C/23.1°C
8/13
Thursday
Sunny
28.7°C/22.6°C
8/14
Friday
Sunny
29.2°C/22.7°C
8/15
Saturday
Patchy rain nearby
28.6°C/24.2°C
8/16
Sunday
Light rain shower
26.8°C/25.1°C
8/17
Monday
Patchy rain nearby
29.7°C/25.3°C
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