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

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

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

Minimum: 67°F

Average: 72°F

Maximum: 76°F

Other useful seasonal weather averages in october:

  • Outside temperature: 63°F to 69°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 10.6mph
  • It rains a total of 6in, over 4 day(s).

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

Yes! The water temperature in Jeju Island (Jejudo) in october is pleasant

Swimming in october is pleasant in Jeju Island (Jejudo) and the surrounding area. The sea temperature is 72°F on average (min/max: 67°F/76°F), allowing you to swim for a long time and enjoy water sports.

Note also that in october, the climate is good with an average outside temperature of 66°F, 6in of precipitation (over 4 days) and 73.99 % humidity.

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

October
Average sea temperature 72°F
Minimum sea temperature 67°F
Maximum sea temperature 76°F
Average outside temperature 67°F
Maximum outside temperature 70°F
Minimum outside temperature 65°F
Wind speed 16.2mph
Wind temperature 63°F
Precipitation 6in
Number of days of rain 4 jour(s)
(12%)
Humidity 74%
Visibility in kilometers 9.6km
Cloud cover 37%
Our opinion pleasant swimming

Chart of the tides in october 2025

Tide times in october 2025 in Jeju Island (Jejudo)

Swim elsewhere in South Korea in october

City Average T° Max. T° Our opinion
Busan in october73°F77°Fpleasant swimming
Gangneung in october67°F72°Fcool swimming
Incheon in october66°F70°Fcool swimming
Pohang in october71°F74°Fpleasant swimming
Sokcho in october66°F72°Fcool swimming

Swim in South Korea in october: sea temperature by city

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