Seoul weather in December
Temperature, rain and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: April – June, September – October
What is the weather like in Seoul in December?
In December, Seoul is cold: daytime highs average 4 °C, and nights often drop below freezing (−4 °C). Expect around 5 hours of sunshine a day. Rain is rare: about 5 days bring 22 mm in total. All in all, December is not an ideal month for a holiday in Seoul.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 45 | 36 | 38 |
| Day | 11° | 4° | 2° |
| Night | 3° | −4° | −6° |
| Sun | 5 h | 5 h | 6 h |
| Rain days | 7 | 5 | 4 |
More details for December
- Daylight
- 9 h 36 min07:39 – 17:15
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 44 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+9Asia/Seoul
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 30 %94 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Warm jacket
Seoul in December: quick answers
Is Seoul hot in December?
No. In December, Seoul is cold: daytime highs average 4 °C and nights drop to about −4 °C.
Does it rain much in Seoul in December?
Rain is rare: about 5 days bring 22 mm in total.
Seoul month by month
The whole year in SeoulAll destinations: South KoreaWhere to go in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences