Jeju Weather & Climate

South Korea

Jeju sees feels-like daytime highs peak around 35.8°C in August and nighttime lows bottom out near 2.5°C in January. July is the wettest month (~244 mm), while January is the driest (~40 mm). For sunshine, November leads with about 70% clear skies.

Best time to visit Jeju

Based on mild feels-like temperatures and low rain chances, the most comfortable months are October, May, and June — expect around 1722.8°C with roughly 20% chance of rain on a given day in October.

Jeju climate by month

MonthLow / High °CRain %RainfallClear skiesWind
January2.5° / 6.9°16%40 mm63%27.7 kph
February3.4° / 7.8°20%59 mm58%26.7 kph
March6.9° / 11.6°27%98 mm51%24.3 kph
April11.1° / 17.7°29%119 mm48%21.1 kph
May16.6° / 23.6°31%140 mm47%18 kph
June23° / 28.7°40%199 mm39%16.8 kph
July28.8° / 34.7°47%244 mm39%17.9 kph
August29.9° / 35.8°44%231 mm48%18.8 kph
September24.1° / 29.7°31%170 mm57%20.6 kph
October17° / 22.8°20%80 mm68%22 kph
November10.5° / 15.3°18%61 mm70%23.9 kph
December5.5° / 9.1°16%40 mm70%26.6 kph

Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).

Want to catch Jeju at its best?

Save your perfect conditions and get an email when a forecast matches.

Set up a free alert