Jeju Island — Water Temperature in June

Water Temperature Range

15°C

minimum

20°C

average

24°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
JUN 1	-10°C	21°C	20°C	20°C
JUN 2	21°C	19°C	19°C	19°C
JUN 3	21°C	20°C	20°C	20°C
JUN 4	21°C	20°C	20°C	20°C
JUN 5	22°C	20°C	20°C	20°C
JUN 6	22°C	20°C	20°C	20°C
JUN 7	22°C	21°C	21°C	20°C
JUN 8	22°C	21°C	21°C	20°C
JUN 9	-10°C	21°C	21°C	20°C
JUN 10	21°C	21°C	21°C	20°C
JUN 11	22°C	21°C	21°C	20°C
JUN 12	22°C	22°C	22°C	21°C
JUN 13	21°C	22°C	22°C	22°C
JUN 14	21°C	22°C	22°C	22°C
JUN 15	22°C	22°C	22°C	22°C
JUN 16	22°C	21°C	21°C	21°C
JUN 17	22°C	22°C	22°C	21°C
JUN 18	22°C	22°C	22°C	22°C
JUN 19	22°C	22°C	22°C	22°C
JUN 20	22°C	23°C	23°C	22°C
JUN 21	22°C	23°C	23°C	23°C
JUN 22	23°C	23°C	23°C	23°C
JUN 23	23°C	23°C	23°C	23°C
JUN 24	22°C	23°C	23°C	23°C
JUN 25	21°C	23°C	23°C	23°C
JUN 26	21°C	23°C	23°C	22°C
JUN 27	21°C	23°C	23°C	23°C
JUN 28	22°C	24°C	24°C	24°C
JUN 29	23°C	24°C	24°C	23°C
JUN 30	22°C	24°C	24°C	24°C

June: Climate and Swimming Opportunities

Average Night Air Temperature

19°C

Average Day Air Temperature

27°C

Precipitation Amount per Month

261 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

5 hrs

Average Wind Speed

11 km/h

Average Humidity

78%

At such water and air temperatures, swimming is pleasant and refreshing rather than hot. After you get in, it feels comfortable, and you’ll warm up quickly when you come out.