World Resorts South Korea Seoul Weather

Seoul weather in December

Weather in Seoul: December

Average day temperature: 35.9°F
Average night temperature: 30.0°F
Sea water temperature: 46.8°F
Number of sunny days: 15 days
Day length: 9.6 - 9.8 hours
Number of rainy days: 1 day
Precipitation totals: 1.0 in.

Air temperature in December, °F

Show year:
2024
2023
2022

The highest day temperature during December of 2024 was 52°F. At the same time the lowest night temperature was 23°F. Daily and nightly averages during December were 36.3°F and 31.2°F.

Sea water temperature in Seoul in December, °F

Show year:
2024
2023
2022

The average sea water temperature in December of 2024 was 46.2°F. The highest and lowest sea temperatures during the month were 52.2°F and 41.9°F.

Sunny, partly cloudy and cloudy days

Mostly all days in December are sunny but cloudy days are also possible.

Precipitation total in December, in.

Precipitation total value in Seoul in December is 1.0 in. Other months of the year show relatively similar values.

Wind speed in December, mph

The average wind speed value in December is 5.6 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 5.9.

Best time for vacation in Seoul

Sunniest months:
May 19 days
October 18 days
March 17 days
Warmest months:
August 87.0 °F
July 85.9 °F
June 82.2 °F
Warmest sea temp:
August 78.7 °F
September 74.9 °F
July 74.7 °F
Coldest months:
January 32.8 °F
December 35.9 °F
February 38.2 °F
Rainiest months:
July 11 days
August 8 days
June 5 days
Windiest months:
April 7.2 mph
March 7.2 mph
May 6.5 mph

Seoul on a weather map

Seoul
+34°F
SE 6 mph
Feels like: +28°F
Precip.: 0%
Places in South Korea:
Name
°F
+32°F
+36°F
+37°F
+43°F
+34°F
+46°F
24 Hours Forecast
Seoul
Local time: 16:15
December 05, friday
1800
30°F
SW
1 mph
2100
28°F
W
2 mph
December 06, saturday
0000
28°F
NW
3 mph
0300
28°F
NW
3 mph
0600
30°F
NW
4 mph
0900
30°F
NW
4 mph
1200
34°F
NW
4 mph
1500
34°F
NW
3 mph
Units of measurement: °C / °F