Current Sea Water Temperature:
+66.2°F
| Maximum Sea Water Temperature in December: | 69.6°F |
| Minimum Sea Water Temperature in December: | 60.2°F |
| Average water temperature in December: | 63.9°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 18 | 66.2°F | December 13 | 67.2°F |
| December 17 | 65.0°F | December 12 | 66.2°F |
| December 16 | 65.2°F | December 11 | 66.6°F |
| December 15 | 66.4°F | December 10 | 67.2°F |
| December 14 | 67.0°F | December 09 | 67.8°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 2025 for Jeju was 87.3°F. The maximum and minimum values were 83.6°F and 89.6°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Jeju was 86.1°F. The maximum and minimum values were 81.0°F and 89.6°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Jeju was 83.6°F. The maximum and minimum values were 76.2°F and 87.2°F respectively.
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Jeju
Local time: 10:17
19 dec, friday
| 1200 |  |
60°F | N 2 mph |
| 1500 |  |
62°F | N 2 mph |
| 1800 |  |
54°F | NW 4 mph |
| 2100 | |
54°F | N 5 mph |
20 dec, saturday
| 0000 |  |
54°F | N 6 mph |
| 0300 | |
56°F | N 6 mph |
| 0600 | |
56°F | N 6 mph |
| 0900 | |
60°F | NE 5 mph |