August is the hottest month in Jeju-do Island with an average temperature of 27°C (80°F) and the coldest is January at 6°C (43°F) with the most daily sunshine hours at 9 in August. The wettest month is July with an average of 328mm of rain. The best month to swim in the sea is in August when the average sea temperature is 28°C (82°F).
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Sunrise 07:24
Sunset 17:26
Sunrise 07:24
Sunset 17:26