World Resorts South Korea Jeju Weather

Jeju Sea Temperature in August

Average sea water temperature in August:
+81.2°F
Minimum sea water temperature in August: 86.5°F
Maximum sea water temperature in August: 73.6°F

Daily sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 82.0°F. The highest and lowest sea temperatures during the month were 85.8°F and 79.0°F.

Monthly sea water temperature in Jeju, °F

Which South Korea resorts have warmest sea in August?

Place name August 2026 August 2025
Incheon 82.3°F 82.0°F
Jeju 82.0°F 83.6°F
Seoul 81.4°F 80.8°F
Busan 81.2°F 80.6°F
Yongpyong 78.9°F 78.7°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 77.7 °F
Warmest sea temp:
August 81.3 °F
September 77.5 °F
July 76.7 °F
Coldest months:
January 44.8 °F
February 46.3 °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 13.9 mph

Jeju on a weather map

Current weather
04:10
Jeju
+79°F
W 9 mph
Feels like: +84°F
Precip.: 26%
Places in South Korea:
Name
°F
Yongpyong
+70°F
Incheon
+77°F
Muju
+75°F
Busan
+81°F
Seoul
+77°F
Jeju
+79°F
24 Hours Forecast
Jeju
Local time: 04:10
August 27, thursday
0600
77°F
NW
7 mph
0900
84°F
NW
6 mph
1200
88°F
NW
7 mph
1500
84°F
NW
1 mph
1800
82°F
NW
4 mph
2100
79°F
NW
6 mph
August 28, friday
0000
79°F
NW
6 mph
0300
77°F
N
3 mph
Units of measurement: °C / °F