Current sea water temperature:
+58.5°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: | 58.7°F |
| more information | |
14 days
forecast
forecast
| Jeju |
monthly
weather
weather
| Jeju |
Sea water temperature for the last 10 days:
| April 6 | 58.5°F | April 1 | 59.4°F |
| April 5 | 59.7°F | March 31 | 60.3°F |
| April 4 | 60.1°F | March 30 | 60.1°F |
| April 3 | 59.7°F | March 29 | 60.3°F |
| April 2 | 59.7°F | March 28 | 59.7°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
April
April
| Jeju |
Best time for vacation in Jeju
Jeju on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Jeju
Local time: 06:12
April 07, tuesday
0900
54°F
S
16 mph
16 mph
1200
52°F
S
17 mph
17 mph
1500
52°F
S
16 mph
16 mph
1800
48°F
S
14 mph
14 mph
2100
46°F
S
10 mph
10 mph
April 08, wednesday
0000
46°F
S
7 mph
7 mph
0300
45°F
S
6 mph
6 mph
0600
43°F
S
4 mph
4 mph
