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: 46.7°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
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
9
18
27
36
45
54
63
Day temperature   
Night temperature

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
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
37
40
43
46
49
52
55
58

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
Sunny days
Partly cloudy days
Cloudy days
48%
29%
23%

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

Precipitation total in December, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.6
3.2
4.8
6.4
8.0
9.6
11.2
2.0
3.1
4.9
9.3
9.3
4.7
3.9
2.1
1.8
2.0
3.1
4.9
9.3
9.3
4.7
3.9
2.1
1.8

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
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.2
2.4
3.6
4.8
6.1
7.3
8.5
5.6
5.3
5.2
5.5
5.5
5.6
6.7
7.1
6.5
6.4
5.4
5.6
5.6
5.3
5.2
5.5
5.5
5.6
6.7
7.1
6.5
6.4
5.4

The average wind speed value in December is 5.6 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.6
3.3
4.9
6.6
8.2
9.8
11.5
13.1
6.6
7.4
7.5
6.4
6.2
8.6
9.6
8.8
7.9
7.1
6.3
5.9
6.6
7.4
7.5
6.4
6.2
8.6
9.6
8.8
7.9
7.1
6.3

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:
October 19 days
May 19 days
March 17 days
Warmest months:
August 86.9 °F
July 85.6 °F
June 82.2 °F
Warmest sea temp:
August 78.6 °F
September 74.7 °F
July 74.4 °F
Coldest months:
January 32.8 °F
December 35.9 °F
February 38.2 °F
Rainiest months:
July 11 days
August 9 days
May 5 days
Windiest months:
April 7.3 mph
March 7.2 mph
May 6.6 mph

Seoul on a weather map

Leaflet | Tiles © Esri
Places in South Korea:
Name
°F
+43°F
+52°F
+43°F
+55°F
+55°F
+54°F
24 Hours Forecast
Seoul
Local time: 21:04
April 26, saturday
0000
52°F
E
6 mph
0300
50°F
NE
3 mph
0600
48°F
N
4 mph
0900
55°F
NE
7 mph
1200
64°F
NE
12 mph
1500
64°F
NE
14 mph
1800
61°F
NE
13 mph
2100
57°F
NE
8 mph
Units of measurement: °C / °F