Swimming in Jeju Island (Jejudo) in june 2025: Average sea temperature in june and tide times in june 2025

Average sea temperature in Jeju Island (Jejudo) in june 2025.

In june, according to seasonal norms, the sea temperature in Jeju Island (Jejudo) is:

Minimum: 63°F

Average: 69°F

Maximum: 77°F

Other useful seasonal weather averages in june:

  • Outside temperature: 68°F to 73°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 12.4mph
  • It rains a total of 8.6in, over 8 day(s).

Should we swim in Jeju Island (Jejudo) in june?

Yes... and no. The water temperature in Jeju Island (Jejudo) in june is cool

Swimming in june on the beaches of Jeju Island (Jejudo) is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 77°F, it can also be as low as 63°F! Note that the average is 69°F.

Note also that in june, the climate is good with an average outside temperature of 70°F, 8.6in of precipitation (over 8 days) and 87.23 % humidity.

Water and normal seasonal temperatures in Jeju Island (Jejudo) in june

June
Average sea temperature 69°F
Minimum sea temperature 63°F
Maximum sea temperature 77°F
Average outside temperature 72°F
Maximum outside temperature 74°F
Minimum outside temperature 68°F
Wind speed 11.8mph
Wind temperature 68°F
Precipitation 8.6in
Number of days of rain 8 jour(s)
(26%)
Humidity 88%
Visibility in kilometers 9.08km
Cloud cover 45%
Our opinion cool swimming

Chart of the tides in june 2025

Tide times in june 2025 in Jeju Island (Jejudo)

Swim elsewhere in South Korea in june

City Average T° Max. T° Our opinion
Busan in june69°F75°Fcool swimming
Gangneung in june67°F74°Fcool swimming
Incheon in june66°F72°Fcool swimming
Pohang in june68°F74°Fcool swimming
Sokcho in june67°F74°Fcool swimming

Swim in South Korea in june: sea temperature by city

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