Current Sea Water Temperature:
+77.6°F
| Maximum Sea Water Temperature in October: | 84.2°F |
| Minimum Sea Water Temperature in October: | 68.2°F |
| Average water temperature in October: | 75.2°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| October 18 | 77.6°F | October 13 | 77.4°F |
| October 17 | 77.4°F | October 12 | 76.8°F |
| October 16 | 76.8°F | October 11 | 77.4°F |
| October 15 | 77.2°F | October 10 | 76.8°F |
| October 14 | 77.6°F | October 09 | 76.4°F |
When is the Warmest Sea for Jeju?
According to our data for the last three years for Jeju the highest average sea water temperature was in August, September and July.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Jeju was 86.1°F. The maximum and minimum values were 82.2°F and 89.8°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2026 for Jeju was 82.3°F. The maximum and minimum values were 79.4°F and 89.0°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Jeju was 81.4°F. The maximum and minimum values were 74.6°F and 90.0°F respectively.
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Jeju
Local time: 13:16
19 oct, monday
| 1500 |  |
72°F | SE 6 mph |
| 1800 | |
72°F | SE 4 mph |
| 2100 | |
68°F | S 7 mph |
20 oct, tuesday
| 0000 |  |
64°F | SW 9 mph |
| 0300 | |
68°F | W 7 mph |
| 0600 | |
70°F | W 9 mph |
| 0900 |  |
74°F | NW 4 mph |
| 1200 | |
80°F | E 2 mph |