Jeju Weather in December
With daytime temperatures of 12°C (54°F) and nighttime lows of 7°C (45°F), December in Jeju brings low temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 75 mm (3 in) falls on average.
Rainfall in Jeju in December
Typically, you can expect about 11 days of rain this month, with 75 mm (3 in) on average. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Jeju in December
In December, Jeju sees low temperatures, with highs of 12°C (54°F). Nights drop to around 7°C (45°F). December is a notable month of the winter season. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Jeju in December
The month is characterized by fewer sunny days, with roughly 83 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.Our weather planner can help you find worldwide destinations with pleasant weather during this period. October typically offers the best weather for Jeju.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Jeju's climate page.
Jeju Temperature in December
Min Temperature
7°C (45°F)
Max Temperature
12°C (54°F)
Chance of Rain
37%
Precipitation
75 mm (3 in)
Rainy days
11 days
Humidity
65%
Sunshine
83 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jeju typically drop from around 13°C (55°F) at the start of December to approximately 9°C (48°F) by the end. Nights are cold, with lows typically ranging from 4°C (39°F) to 7°C (45°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Jeju in December
Browse day-by-day weather records for Jeju spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jeju historical weather extremes in December
According to our 49 years of weather records for Jeju, the following extremes were recorded between 1976 and 2025.
- On December 10, 2023, temperatures climbed to 23°C (73°F), marking the warmest December day on record.
- The coldest December day was on December 27, 1976, with a maximum of 1°C (34°F).
- The lowest overnight temperature recorded in December was -9°C (16°F) (December 28, 1976).
Best Places in South Korea in December
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in December →
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What to Wear in Jeju in December
Pack for changing conditions in Jeju in December. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Jeju in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Jeju's climate page.
Temperature Rainfall Sunshine Humidity
See the full Jeju climate overview or explore weather in South Korea.
