Jeju weather in January 2025

Expect 46°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Jeju in January. Check more long-term weather averages for Jeju in January before you book your next holiday to South Korea in 2025/2026.

  • 46°F maximum daytime temperature in January in Jeju46
    46°F max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in January in Jeju12
    12 days with some rainfall
  • 34°F minimum night-time temperature in January in Jeju34
    34°F min night temperature
  • 10 hours of daylight per day in January in Jeju10
    10 hours of daylight per day
  • No heat & humidity in January in Jeju0
    No heat & humidity
  • 2.4 inches monthly rainfall in January in Jeju2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in January in Jeju3
    3 (Moderate) UV index
  • 59°F sea temperature in January in Jeju59
    59°F sea temperature

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The January weather guide for South Korea (Jeju) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How warm is it in Jeju in January?

Daytime temperatures usually reach 46°F in Jeju in January, falling to 34°F at night.

How sunny is it in Jeju in January?

There are normally 4 hours of bright sunshine each day in Jeju in January - that's 38% of daylight hours.

How warm is the sea around Jeju in January?

The average sea temperature around Jeju in January is 59°F.

Does it rain in Jeju in January?

There are usually 12 days with some rain in Jeju in January and the average monthly rainfall is 2.4 inches.

Jeju January sunrise & sunset times

Browse the sunrise and sunset times for Jeju in January 2025. Select a month to view Jeju sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 07:38 17:37
Thursday, 16th January 2025 07:38 17:50
Friday, 31st January 2025 07:31 18:04

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