World Resorts South Korea Jeju Weather

Jeju Sea Temperature in January

Average sea water temperature in January:
+59.4°F
Minimum sea water temperature in January: 63.3°F
Maximum sea water temperature in January: 55.2°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 60.8°F. The highest and lowest sea temperatures during the month were 63.3°F and 59.0°F.

Monthly sea water temperature in Jeju, °F

Which South Korea resorts have warmest sea in January?

Place name January 2026 January 2025
Jeju 60.8°F 59.4°F
Busan 56.3°F 55.5°F
Yongpyong 53.0°F 51.7°F
Seoul 38.5°F 38.5°F
Incheon 37.7°F 37.9°F

Best time for vacation in Jeju

Sunniest months:
May 15 days
October 14 days
April 14 days
Warmest months:
August 84.4 °F
July 82.1 °F
September 77.5 °F
Warmest sea temp:
August 81.3 °F
September 77.6 °F
July 76.7 °F
Coldest months:
January 44.8 °F
February 46.3 °F
December 48.6 °F
Rainiest months:
August 8 days
July 7 days
September 6 days
Windiest months:
January 14.4 mph
December 14.1 mph
February 13.9 mph

Jeju on a weather map

Current weather
02:46
Jeju
+64°F
SE 13 mph
Feels like: +64°F
Precip.: 36%
Places in South Korea:
Name
°F
Yongpyong
+52°F
Incheon
+55°F
Muju
+54°F
Busan
+61°F
Seoul
+54°F
Jeju
+64°F
24 Hours Forecast
Jeju
Local time: 02:46
October 27, tuesday
0300
64°F
SE
13 mph
0600
64°F
SE
16 mph
0900
63°F
S
17 mph
1200
63°F
S
19 mph
1500
63°F
S
21 mph
1800
61°F
S
22 mph
2100
57°F
S
18 mph
October 28, wednesday
0000
55°F
S
17 mph
Units of measurement: °C / °F