Jeju Island is one of several regions in South Korea, with temperatures that range from 9°C (48°F) in January to 29°C (84°F) during the peak of August. We've based our full climate overview on data from Jeju, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In Jeju Island, during the months of May, June, September and October you can expect comfortable weather, with average temperatures ranging from 20°C (68°F) to 26°C (79°F).
The colder period typically falls in the months of January and February.
When it comes to rainfall, Jeju Island sees significant variations throughout the year. June tends to be the wettest, receiving 202 mm (8 in) of rain, while November is much drier with just 73 mm (2.9 in).
May is the sunniest period, with ideal conditions for exploring the region and all it has to offer.
