Current sea water temperature:
+61.2°F
| Minimum sea water temperature in April: | 62.8°F |
| Maximum sea water temperature in April: | 54.9°F |
| Average sea water temperature in April: | 58.8°F |
| more information | |
14 days
forecast
forecast
| Jeju |
monthly
weather
weather
| Jeju |
Sea water temperature for the last 10 days:
| April 27 | 61.2°F | April 22 | 60.3°F |
| April 26 | 61.0°F | April 21 | 60.4°F |
| April 25 | 61.7°F | April 20 | 60.8°F |
| April 24 | 61.7°F | April 19 | 60.6°F |
| April 23 | 59.9°F | April 18 | 60.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Jeju?
Based on the data about daily sea water temperature for the last three years the warmest sea in Jeju was noticed in August, September and July.
Monthly Sea Temperatures in Jeju, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 83.6°F. The highest and lowest sea temperatures during the month were 85.6°F and 80.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 85.6°F and 77.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 80.2°F. The highest and lowest sea temperatures during the month were 83.5°F and 73.6°F.
current
weather
weather
| Jeju |
weather in
May
May
| Jeju |
Best time for vacation in Jeju
Jeju on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Jeju
Local time: 00:50
April 28, tuesday
0300
59°F
NE
9 mph
9 mph
0600
59°F
NE
9 mph
9 mph
0900
59°F
SE
10 mph
10 mph
1200
59°F
SE
11 mph
11 mph
1500
57°F
SE
12 mph
12 mph
1800
55°F
SE
12 mph
12 mph
2100
54°F
SE
9 mph
9 mph
April 29, wednesday
0000
54°F
SE
11 mph
11 mph
