MyCruiseForecast

Jeju, South Korea

Jeju cruise weather by month

What to expect when your ship is in Jeju in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

Weather in Jeju by month

Average highs run from 47°F (8°C) in January to 86°F (30°C) in August. Rain falls on the fewest days in May and the most in February. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2022–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
MonthHigh / lowRain daysWindSea tempTypical seas
January47 / 38°F8 / 3°C52%13 mph22 km/h61°F16°C4 ft (1.3 m)Moderate; rougher days up to 9 ft
February47 / 38°F9 / 3°C54%14 mph23 km/h59°F15°C5 ft (1.4 m)Moderate; rougher days up to 8 ft
March57 / 45°F14 / 7°C42%13 mph21 km/h57°F14°C4 ft (1.1 m)Slight; rougher days up to 7 ft
April65 / 53°F18 / 11°C36%11 mph19 km/h60°F15°C3 ft (0.8 m)Slight; rougher days up to 5 ft
May69 / 60°F20 / 16°C32%12 mph20 km/h–2 ft (0.6 m)Slight; rougher days up to 4 ft
June75 / 69°F24 / 20°C39%13 mph21 km/h–2 ft (0.5 m)Slight; rougher days up to 4 ft
July84 / 78°F29 / 25°C51%14 mph23 km/h–3 ft (0.8 m)Slight; rougher days up to 4 ft
August86 / 80°F30 / 27°C40%13 mph21 km/h–2 ft (0.6 m)Slight; rougher days up to 4 ft
September81 / 76°F27 / 24°C52%14 mph23 km/h–3 ft (0.8 m)Slight; rougher days up to 5 ft
October70 / 62°F21 / 17°C36%12 mph19 km/h76°F24°C4 ft (1.1 m)Slight; rougher days up to 7 ft
November62 / 52°F17 / 11°C43%13 mph21 km/h69°F21°C3 ft (1.0 m)Slight; rougher days up to 9 ft
December50 / 42°F10 / 5°C51%14 mph23 km/h65°F18°C5 ft (1.5 m)Moderate; rougher days up to 9 ft

Check the forecast for your sailing

Upcoming cruises in Jeju

4 ships from 4 cruise lines are scheduled here, 7 visits in total. The next 7:

DateShipStopSailing
Tue, Oct 202026Star NavigatorStar Dream CruisesCalls5 nights from Keelung
Fri, Oct 232026Silver MoonSilversea CruisesCalls14 nights from Tokyo
Tue, Nov 32026WesterdamHolland America LineCalls29 nights from Tokyo
Wed, Nov 42026Silver MoonSilversea CruisesCalls16 nights from Tokyo
Mon, Nov 162026WesterdamHolland America LineCalls29 nights from Tokyo
Fri, Nov 202026Norwegian JadeNorwegian Cruise LineCalls9 nights from Yokohama
Sun, Nov 222026Norwegian JadeNorwegian Cruise LineCalls9 nights from Incheon

Ships that visit Jeju

Nearby cruise ports

Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.