World Resorts South Korea Seoul Weather

Seoul Sea Temperature in January

Average sea water temperature in January:
+39.8°F
Minimum sea water temperature in January: 44.6°F
Maximum sea water temperature in January: 36.3°F

Daily sea water temperature in January, °F

Show year:
2025
2024
2023
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The average sea water temperature in January of 2025 was 38.5°F. The highest and lowest sea temperatures during the month were 42.1°F and 36.3°F.

Monthly sea water temperature in Seoul, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
46.7
57.1
66.9
74.7
78.5
74.4
67.5
57.8
48.7
41.1
37.3
39.8

Which South Korea resorts have warmest sea in January?

Place name January 2025 January 2024
Jeju 59.4°F 60.7°F
Busan 55.5°F 56.1°F
Yongpyong 51.7°F 51.1°F
Seoul 38.5°F 39.7°F
Incheon 37.9°F 39.2°F

Best time for vacation in Seoul

Sunniest months:
October 19 days
May 19 days
March 18 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 7.3 mph
May 6.6 mph

Seoul on a weather map

Leaflet | Tiles © Esri
Places in South Korea:
Name
°F
Yongpyong
+28°F
Incheon
+39°F
Muju
+34°F
Busan
+45°F
Seoul
+39°F
Jeju
+45°F
24 Hours Forecast
Seoul
Local time: 07:27
March 10, monday
0900
45°F
NW
2 mph
1200
52°F
NE
4 mph
1500
54°F
NE
10 mph
1800
50°F
NE
8 mph
2100
46°F
E
3 mph
March 11, tuesday
0000
43°F
E
2 mph
0300
41°F
NE
1 mph
0600
41°F
W
1 mph
Units of measurement: °C / °F