Rainy day = 1 mm or more of rain. Of these, about 5 days get 10 mm or more. Average of the last 30 years.
What to wear in Seogwipo in May
Long sleeves and a light jacket or cardigan.
What to pack
Compact umbrella— rain on about 8 days this month
Plug adapter (if needed)— Korea uses 220V with Type C/F round two-pin sockets
Compared with nearby months
Rain is similar to April.
Better weather elsewhere in Korea in May
Gyeongju in May — 3 fewer rainy days, fewer heavy-rain days (6 rainy days, high 26°C (78°F))
Gangneung in May — 2 fewer rainy days, fewer heavy-rain days (6 rainy days, high 23°C (74°F))
Sokcho in May — 2 fewer rainy days, fewer heavy-rain days (6 rainy days, high 21°C (70°F))
Will it rain on your travel dates?
Pick your arrival and departure dates. We look up the same dates over the last 30 years.
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Public holidays in May 2027
May 1 — Labor Day
May 3 — Alternative holiday for Labor Day
May 5 — Children's Day
May 13 — Buddha's Birthday
Korea travel basics
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 19:25 on May 15 (local time) — about 13 h 52 min of daylight.
Observed at Korea Meteorological Administration (KMA) station 189, 1996–2025 daily records. Sea temperature: ERA5 (Copernicus), daily mean just offshore. How we calculate