Travel Weather Fairy🎊 Featured event
Seoul autumn festival season
📅 Around September–October
Riverfront and city events can overlap with fall foliage demand, making major sights and weekend transport busier.
Check official source →🇰🇷 South Korea · Seoul
Seoul Weather in December
Winter · Cold wave riskDecember in Seoul is usually freezing or near-freezing by day and very cold at night, with 2016–2025 average highs around 3°C (37°F) and lows near -5°C (22°F). Across the 10-year average, about 5 days record measurable precipitation and the month totals roughly 28 mm of water equivalent, often as snow rather than rain.
Avg high37.4°F 3.0°CAvg low22.4°F -5.3°CRainy days~4.7 daysMonthly rain27.7 mm
🧳 Packing guide
What to wear in Seoul in December
For what to wear in Seoul in December, pack a winter coat, warm layers and cold-weather accessories. Water-resistant shoes are also useful when snow or slush is possible.
Travel takeaway: This is a good fit for travelers who enjoy winter scenery and are prepared for colder walking conditions.
🗓️ Travel timing at a glance
Seoul: 12-month travel weather
Seoul has four distinct seasons, a summer monsoon, hot and humid July–August weather, and cold winters with occasional snow.
JanMidwinter · Cold wave riskFebWinter · Cold wave riskMarEarly springAprSpringMayLate springJunEarly summer · Rainy season beginsJulRainy season · Heat wave riskAugMidsummer · Heat wave riskSepEarly autumn · Typhoon riskOctAutumnNovLate autumnDecWinter · Cold wave risk
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
🎉 Trip planning check
Seoul 2026 events & busy periods
Check major events, holidays and periods that may affect crowds, transport or opening hours.
⚠️ Busy / closure period
Lunar New Year and Chuseok holidays
📅 Lunar-calendar dates · vary each year
Some restaurants and shops close while high-speed rail and road demand rises sharply during these major family holidays.
Check official source →Event dates, holiday schedules and opening hours can change. Recheck the linked official tourism or government source before departure.
Seoul in December · recent 3 years
Compare the most recent complete year with the two years before it. Daily high / low temperatures are shown in °F.
CalendarNo measurable rain🌧️ Rain⛈️ Thunderstorm❄️ SnowHigh / Low · °F
⭐ December 2025 · latest complete year☔ 9 days · 45.9 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
10.3°C/1°C
No rain
2
1.5°C/-6.2°C
No rain
3
-4°C/-8.6°C
No rain
4
0°C/-10°C
🌧️ 1.7 mm
5
-0.7°C/-10.7°C
No rain
6
4.3°C/-3.6°C
🌧️ 3.2 mm
7
10.7°C/-1.1°C
🌧️ 1.2 mm
8
4.8°C/-1.9°C
No rain
9
5.6°C/-3.6°C
No rain
10
7.7°C/-1.5°C
No rain
11
6.7°C/-3.7°C
🌧️ 11.2 mm
12
5°C/-4.2°C
No rain
13
2.2°C/-1.7°C
🌧️ 9.8 mm
14
2.1°C/-3.3°C
No rain
15
4.3°C/-4.2°C
No rain
16
2.9°C/-0.2°C
🌧️ 1.9 mm
17
5.5°C/-1.7°C
No rain
18
4.8°C/-3.3°C
No rain
19
6.8°C/-2.4°C
No rain
20
9.2°C/0.3°C
🌧️ 4 mm
21
0.2°C/-4.5°C
No rain
22
2.3°C/-6.1°C
No rain
23
2.2°C/-1.8°C
🌧️ 10.9 mm
24
3.1°C/-2.5°C
No rain
25
-1.2°C/-9.5°C
No rain
26
-5.8°C/-12.2°C
No rain
27
2.2°C/-8.8°C
No rain
28
5.9°C/-3.6°C
🌧️ 1.2 mm
29
8°C/-1.9°C
No rain
30
1.7°C/-4.5°C
No rain
31
-2.2°C/-8.8°C
No rain
December 2024☔ 0 days · 2.7 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
4.7°C/-2.9°C
No rain
2
12.5°C/-0.4°C
No rain
3
2.3°C/-4.3°C
No rain
4
3.8°C/-2.1°C
No rain
5
6.6°C/-1.9°C
No rain
6
3.3°C/-2.6°C
No rain
7
1.6°C/-3.5°C
No rain
8
2.2°C/-4.9°C
No rain
9
3.7°C/-4.5°C
No rain
10
5.1°C/-2.5°C
No rain
11
5.1°C/-2.3°C
No rain
12
2.8°C/-4.6°C
No rain
13
2.9°C/-2.3°C
No rain
14
0.9°C/-5°C
No rain
15
4.4°C/-2.7°C
No rain
16
2.6°C/-3.8°C
No rain
17
0.8°C/-4°C
No rain
18
-1.2°C/-6.8°C
No rain
19
1.7°C/-6.5°C
No rain
20
2.7°C/-3.3°C
No rain
21
0.8°C/-6.2°C
No rain
22
-2°C/-8.7°C
No rain
23
3.3°C/-9.5°C
No rain
24
1.1°C/-6.6°C
No rain
25
4.2°C/-4.9°C
No rain
26
1.7°C/-5.2°C
No rain
27
0.3°C/-6°C
No rain
28
-0.2°C/-6.7°C
No rain
29
3.1°C/-5.3°C
No rain
30
8.5°C/-0.9°C
No rain
31
2.1°C/-3.6°C
No rain
December 2023☔ 6 days · 81.2 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
0.6°C/-7.1°C
No rain
2
6.3°C/-5.6°C
No rain
3
3.3°C/-5.6°C
No rain
4
6.8°C/-4.9°C
No rain
5
9.5°C/0.8°C
No rain
6
9.4°C/-0.2°C
🌧️ 11.1 mm
7
10.5°C/-3.1°C
No rain
8
15.6°C/3.6°C
No rain
9
15.3°C/7.4°C
No rain
10
13.9°C/2.1°C
No rain
11
10.2°C/3.4°C
🌧️ 14.3 mm
12
7.7°C/1.3°C
No rain
13
10°C/-1.9°C
No rain
14
7.2°C/5.4°C
🌧️ 19.8 mm
15
5.3°C/3.1°C
🌧️ 18.9 mm
16
2.9°C/-10.9°C
No rain
17
-7°C/-12.8°C
No rain
18
-3.6°C/-11°C
No rain
19
0°C/-8.1°C
No rain
20
-3.9°C/-11.4°C
No rain
21
-8.1°C/-14.5°C
No rain
22
-8.1°C/-14.9°C
No rain
23
-2.4°C/-12.2°C
No rain
24
1°C/-5.4°C
No rain
25
1.9°C/-6.2°C
No rain
26
6°C/-5.3°C
No rain
27
5.5°C/-6.5°C
No rain
28
4.5°C/-3.7°C
No rain
29
4.5°C/-3.5°C
No rain
30
1.2°C/-3.9°C
🌧️ 11.4 mm
31
5.4°C/-2.4°C
🌧️ 2.2 mm
Historical calendars use Open-Meteo reanalysis data. A rainy day is counted when daily precipitation is at least 1 mm. Conditions at a specific hotel, beach or station can differ.
✈️ Traveling soon?
Current Seoul weather and 7-day forecast
When departure is close, the latest forecast matters more than long-term averages.
Loading current weather…
Loading 7-day forecast…
Forecast data: MET Norway · CC BY 4.0 · cached by Travel Weather Fairy
💱 Quick currency check
Local currency to U.S. dollars
Loading exchange rate…
💱 Loading exchange rate…
Seoul weather in other months
Switch months to compare the seasonal pattern.