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:
2025
2024
2023

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

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:
May 15 days
October 14 days
April 14 days
Warmest months:
August 84.5 °F
July 82.0 °F
September 77.7 °F
Warmest sea temp:
August 81.2 °F
September 77.5 °F
July 76.6 °F
Coldest months:
January 44.8 °F
February 46.2 °F
December 48.6 °F
Rainiest months:
August 8 days
September 7 days
July 7 days
Windiest months:
January 14.4 mph
December 14.1 mph
February 14.0 mph

Jeju on a weather map

Current weather
12:17
Jeju
+39°F
SE 20 mph
Feels like: +30°F
Precip.: 62%
Places in South Korea:
Name
°F
Yongpyong
+25°F
Incheon
+25°F
Muju
+25°F
Busan
+34°F
Seoul
+23°F
Jeju
+39°F
24 Hours Forecast
Jeju
Local time: 12:17
January 08, thursday
1500
39°F
SE
19 mph
1800
39°F
SE
17 mph
2100
39°F
SE
14 mph
January 09, friday
0000
39°F
SE
11 mph
0300
39°F
SE
8 mph
0600
39°F
SE
7 mph
0900
41°F
E
8 mph
1200
46°F
E
11 mph
Units of measurement: °C / °F