Current sea water temperature:
+74.1°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: | 72.7°F |
| more information | |
14 days
forecast
forecast
| Jeju |
monthly
weather
weather
| Jeju |
Sea water temperature for the last 10 days:
| October 26 | 74.1°F | October 21 | 74.8°F |
| October 25 | 74.5°F | October 20 | 74.3°F |
| October 24 | 74.8°F | October 19 | 74.7°F |
| October 23 | 74.7°F | October 18 | 74.8°F |
| October 22 | 74.8°F | October 17 | 74.7°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:
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: 01:53
October 27, tuesday
0300
64°F
SE
14 mph
14 mph
0600
63°F
SE
16 mph
16 mph
0900
63°F
S
17 mph
17 mph
1200
63°F
SE
19 mph
19 mph
1500
63°F
SE
21 mph
21 mph
1800
61°F
S
22 mph
22 mph
2100
57°F
S
18 mph
18 mph
October 28, wednesday
0000
55°F
S
16 mph
16 mph
