A volcanic island 80km off Korea's southern coast, Jeju was formed by eruptions of Hallasan, South Korea's highest peak at 1,950m. The island is a UNESCO triple crown holder — World Heritage Site, Biosphere Reserve, and Global Geopark. Its famous haenyeo — female free-divers who harvest seafood without oxygen tanks — have been practicing their tradition for centuries and are a UNESCO Intangible Cultural Heritage.
Nights sit around 22°C and afternoons around 26°C, though some days reach 31°C.
Jeju Island has real seasons: summer afternoons sit around 28°C, winter ones around 10°C.
Some summer days reach 34°C, and some winter nights drop below freezing.
Most of the rain falls in summer, least in winter. The wettest month is August, with 272 mm.
Air quality is worth watching: March averages an AQI of 74, while October clears to 52.
Days stretch to about 14.2 hours of light in June and shrink to 9.8 in December — something to weigh if you work to a fixed timezone.
No month in Jeju Island matches what you're after, so come for the place rather than the weather. Expect fast internet (240 Mbps) and a moderate cost of living (about €1250 a month).
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