World Resorts South Korea Jeju Weather

Jeju Sea Temperature in April

Average sea water temperature in April:
+58.7°F
Minimum sea water temperature in April: 62.8°F
Maximum sea water temperature in April: 54.9°F

Daily sea water temperature in April, °F

Show year:
2025
2024
2023
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9
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15
17
19
21
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25
27
29
31
52
55
58
61
64
67

The average sea water temperature in April of 2025 was 57.6°F. The highest and lowest sea temperatures during the month were 59.7°F and 56.3°F.

Monthly sea water temperature in Jeju, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
62.4
66.7
72.2
77.1
81
76.3
68.3
61.9
58.7
56.8
57.2
59.3

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 Jeju

Sunniest months:
October 15 days
May 15 days
April 14 days
Warmest months:
August 84.4 °F
July 81.8 °F
September 77.4 °F
Warmest sea temp:
August 81.1 °F
September 77.1 °F
July 76.3 °F
Coldest months:
January 44.8 °F
February 46.2 °F
December 48.5 °F
Rainiest months:
August 9 days
July 8 days
September 7 days
Windiest months:
January 14.4 mph
December 14.3 mph
February 14.0 mph

Jeju on a weather map

Leaflet | Tiles © Esri
Places in South Korea:
Name
°F
Yongpyong
+48°F
Incheon
+52°F
Muju
+50°F
Busan
+57°F
Seoul
+54°F
Jeju
+59°F
24 Hours Forecast
Jeju
Local time: 22:51
April 28, monday
0000
59°F
NW
7 mph
0300
57°F
S
6 mph
0600
57°F
S
5 mph
0900
59°F
SE
8 mph
1200
61°F
SE
13 mph
1500
61°F
SE
13 mph
1800
57°F
SE
14 mph
2100
55°F
SE
11 mph
Units of measurement: °C / °F