Current sea water temperature:
+70.7°F
| Minimum sea water temperature in June: | 75.9°F |
| Maximum sea water temperature in June: | 61.2°F |
| Average sea water temperature in June: | 68.3°F |
| more information | |
14 days
forecast
forecast
| Jeju |
monthly
weather
weather
| Jeju |
Sea water temperature for the last 10 days:
| June 26 | 70.7°F | June 21 | 71.1°F |
| June 25 | 71.1°F | June 20 | 71.1°F |
| June 24 | 70.7°F | June 19 | 69.3°F |
| June 23 | 70.5°F | June 18 | 69.3°F |
| June 22 | 71.1°F | June 17 | 69.1°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
July
July
| Jeju |
Best time for vacation in Jeju
Jeju on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Jeju
Local time: 11:10
June 27, saturday
1200
73°F
S
2 mph
2 mph
1500
73°F
SE
6 mph
6 mph
1800
73°F
E
3 mph
3 mph
2100
72°F
E
4 mph
4 mph
June 28, sunday
0000
70°F
NE
5 mph
5 mph
0300
68°F
NE
6 mph
6 mph
0600
68°F
NE
4 mph
4 mph
0900
73°F
S
2 mph
2 mph
