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Jeju weather in December 2025
Expect daytime maximum temperatures of 52°F in Jeju, South Korea in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 1.9 inches of rainfall in the month.
- 52°F max day temperature
52 - 4 hours of sunshine per day
- 10 days with some rainfall
10 - 37°F min night temperature
37 - 10 hours of daylight per day
10 - No heat & humidity
0 - 1.9 inches of monthly rainfall
1.9 - 3 (Moderate) UV index
3 - 63°F sea temperature
63
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Recommended for South Korea
The December 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)
How cold is it in Jeju in December?
Daytime temperatures usually reach 39°F in Jeju in December, falling to 23°F at night.
How sunny is it in Jeju in December?
There are normally 5 hours of bright sunshine each day in Jeju in December - that's 53% of daylight hours.
Does it rain in Jeju in December?
There are usually 7 days with some rain in Jeju in December and the average monthly rainfall is 0.8 inches. Rain may fall as snow in this month.
Jeju December sunrise & sunset times
Browse the sunrise and sunset times for Jeju in December 2025. Select a month to view Jeju sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st December 2025 | 07:20 | 17:26 |
| Tuesday, 16th December 2025 | 07:31 | 17:28 |
| Wednesday, 31st December 2025 | 07:38 | 17:36 |
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