World Resorts South Korea Seoul Weather

Seoul Sea Temperature in April

Average sea water temperature in April:
+48.7°F
Minimum sea water temperature in April: 56.3°F
Maximum sea water temperature in April: 41.5°F

Daily sea water temperature in April, °F

Show year:
2025
2024
2023
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13
15
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19
21
23
25
27
29
31
41
44
47
50
53
56
59
62

The average sea water temperature in April of 2025 was 49.3°F. The highest and lowest sea temperatures during the month were 54.0°F and 46.0°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 April?

Place name April 2025 April 2024
Jeju 57.6°F 60.8°F
Busan 54.4°F 58.3°F
Yongpyong 49.6°F 54.3°F
Seoul 49.3°F 51.6°F
Incheon 49.0°F 51.9°F

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 7.2 mph
March 7.2 mph
May 6.6 mph

Seoul on a weather map

Leaflet | Tiles © Esri
Places in South Korea:
Name
°F
Yongpyong
+43°F
Incheon
+50°F
Muju
+43°F
Busan
+57°F
Seoul
+50°F
Jeju
+57°F
24 Hours Forecast
Seoul
Local time: 07:11
April 28, monday
0900
59°F
E
5 mph
1200
64°F
SE
15 mph
1500
64°F
SE
17 mph
1800
61°F
SE
15 mph
2100
57°F
SE
10 mph
April 29, tuesday
0000
54°F
E
5 mph
0300
52°F
E
2 mph
0600
50°F
NE
2 mph
Units of measurement: °C / °F