South Korea
Seoul in December: weather & travel advice
This month's data profile
Clear transition month
Seoul in December is climatically mixed. The average daily high is around 3 °C. With about 5 rainy days it is dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
48/100 · #12
Warmth
#11
Dryness
#3
Sun
#12
Published best categories: none
Seoul · DecemberPhoto: Basile Morin · CC BY-SA 4.0Climate facts
- Average high
- 3 °C
- Average low
- -4 °C
- Rainy days (est.)
- 5 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 77 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| November | 11 | 3 | 8 | 51 | 3.1 | 76 | 3.1 | 52 |
| December (selected) | 3 | -4 | 5 | 26 | 2.7 | 77 | 3.3 | 48 |
| January | 1 | -7 | 4 | 21 | 3.1 | 77 | 3.2 | 49 |
How do the previous and next months compare?
Baseline: December (48/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| November | +4 | +7.7 °C | +6.8 °C | +2.5 | +24.9 mm | +0.4 h | -0.9 % | -0.2 m/s |
| January | +1 | -2.3 °C | -2.6 °C | -0.9 | -5.4 mm | +0.4 h | -0.3 % | ±0 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Seoul in December?
The average daily high is around 3 °C, with an average daily low of about -4 °C.
Does it rain a lot in Seoul in December?
The curated estimate is about 5 rainy days per month, not a directly measured long-term average. Total precipitation averages around 26 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Seoul?
By the climate score, May, June, September and October are the strongest months for Seoul. December is not among them.