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

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

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

Minimum: 56°F

Average: 59°F

Maximum: 62°F

Other useful seasonal weather averages in january:

  • Outside temperature: 40°F to 45°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at -0mph
  • It rains a total of 3.9in, over 5 day(s).

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

No... The water temperature in Jeju Island (Jejudo) in january is freezing

You won't be able to swim in Jeju Island (Jejudo) in january! The water temperature is freezing, reaching as low as 56°F (and only 62°F at best)! Our advice: if you are going to Jeju Island (Jejudo) this month, plan to sightsee and forget the beach!

Note also that in january, the climate is very bad with an average outside temperature of 43°F, 3.9in of precipitation (over 5 days) and 75.4 % humidity.

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

January
Average sea temperature 59°F
Minimum sea temperature 56°F
Maximum sea temperature 62°F
Average outside temperature 43°F
Maximum outside temperature 47°F
Minimum outside temperature 41°F
Wind speed 18mph
Wind temperature 32°F
Precipitation 3.9in
Number of days of rain 5 jour(s)
(16%)
Humidity 76%
Visibility in kilometers 7.9km
Cloud cover 57%
Our opinion freezing swimming

Chart of the tides in january 2025

Tide times in january 2025 in Jeju Island (Jejudo)

Swim elsewhere in South Korea in january

City Average T° Max. T° Our opinion
Busan in january59°F63°Ffreezing swimming
Gangneung in january51°F56°Ffreezing swimming
Incheon in january41°F47°Ffreezing swimming
Pohang in january56°F60°Ffreezing swimming
Sokcho in january50°F55°Ffreezing swimming

Swim in South Korea in january: sea temperature by city

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