World Resorts South Korea Jeju Weather

Jeju Sea Temperature in January

Average sea water temperature in January:
+59.3°F
Minimum sea water temperature in January: 62.2°F
Maximum sea water temperature in January: 55.2°F

Daily sea water temperature in January, °F

Show year:
2025
2024
2023
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53
55
57
59
61
63
65
67

The average sea water temperature in January of 2025 was 59.4°F. The highest and lowest sea temperatures during the month were 60.8°F and 57.6°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 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 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
+57°F
Incheon
+54°F
Muju
+55°F
Busan
+61°F
Seoul
+59°F
Jeju
+59°F
24 Hours Forecast
Jeju
Local time: 09:06
April 28, monday
1200
61°F
SE
14 mph
1500
59°F
SE
14 mph
1800
57°F
SE
16 mph
2100
54°F
SE
14 mph
April 29, tuesday
0000
52°F
SE
9 mph
0300
52°F
S
7 mph
0600
52°F
SE
4 mph
0900
57°F
SE
6 mph
Units of measurement: °C / °F