Current sea water temperature:
+76.1°F
| Minimum sea water temperature in October: | 80.8°F |
| Maximum sea water temperature in October: | 66.4°F |
| Average sea water temperature in October: | 72.6°F |
| more information | |
14 days
forecast
forecast
| Jeju |
monthly
weather
weather
| Jeju |
Sea water temperature for the last 10 days:
| October 6 | 76.1°F | October 1 | 74.8°F |
| October 5 | 74.1°F | September 30 | 76.6°F |
| October 4 | 74.8°F | September 29 | 77.2°F |
| October 3 | 74.7°F | September 28 | 77.2°F |
| October 2 | 74.1°F | September 27 | 76.5°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 82.4°F. The highest and lowest sea temperatures during the month were 85.8°F and 79.0°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 79.1°F. The highest and lowest sea temperatures during the month were 85.1°F and 76.5°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 78.3°F. The highest and lowest sea temperatures during the month were 86.0°F and 72.1°F.
current
weather
weather
| Jeju |
weather in
October
October
| Jeju |
Best time for vacation in Jeju
Jeju on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Jeju
Local time: 22:38
October 07, wednesday
0000
63°F
S
9 mph
9 mph
0300
61°F
S
9 mph
9 mph
0600
61°F
S
7 mph
7 mph
0900
66°F
S
7 mph
7 mph
1200
70°F
S
8 mph
8 mph
1500
70°F
S
8 mph
8 mph
1800
66°F
S
7 mph
7 mph
2100
64°F
S
5 mph
5 mph
