Jeju Weather in January
South Korea · 30-year monthly averages
🤔 Fair time to visit
January in Jeju is chilly, with average daytime highs around 9°C (47°F) and nighttime lows near 4°C (39°F). Expect roughly 68mm of precipitation spread over about 8 rainy days, with a moderate amount of rain.
Avg high
9°C
47°F
Avg low
4°C
39°F
Rainfall
68mm
moderate
Rainy days
8
days with ≥1mm
☀️ About 70 hours of sunshine over the month (~2h/day).
🎒 What to pack
- jacket or coat
- long-sleeve layers
January vs the rest of the year
FAQ
- How hot is Jeju in January?
- January in Jeju is chilly, with average daytime highs around 9°C (47°F) and nighttime lows near 4°C (39°F). Expect roughly 68mm of precipitation spread over about 8 rainy days, with a moderate amount of rain.
- Does it rain a lot in Jeju in January?
- Jeju sees around 68mm of precipitation in January on average — moderate by global standards.
- Is January a good time to visit Jeju?
- January is a workable month to visit Jeju, but expect some weather trade-offs.