Jeju City weather › May
May is one of the drier months (3rd driest) in Jeju City. On average it rains on 7 of 31 days, with highs of 22°C (72°F) and lows of 15°C (60°F).
Trip rating: Great (93/100) · Best months: May–June and October
Rainy day = 1 mm or more of rain. Of these, about 3 days get 10 mm or more. Average of the last 30 years.
Long sleeves and a light jacket or cardigan.
Rain is similar to April. Daytime highs rise to 25°C (78°F) in June.
Pick your arrival and departure dates. We look up the same dates over the last 30 years.
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| Time zone | Korea Standard Time (UTC+9), no daylight saving |
|---|---|
| Power | 220V, 60Hz, Type C/F (round two-pin) sockets |
| Money | Korean won (KRW). Cards are accepted almost everywhere |
| Entry | Visa and K-ETA rules change — check the official K-ETA site and your government's travel advice |
Sunrise 5:33, sunset 19:26 on May 15 (local time) — about 13 h 53 min of daylight.
Observed at Korea Meteorological Administration (KMA) station 184, 1996–2025 daily records. Sea temperature: ERA5 (Copernicus), daily mean just offshore. How we calculate