Jeju Weather: December
 |
Average Day Temperature: | 48.5°F |
|
Average Night Temperature: | 44.5°F |
|
Sea Water Temperature: | 64.0°F |
|
Number of Sunny Days: | 7 days |
| Sunshine Hours: | 9.9 - 10.1 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 2.2 in | |
| detailed information | ||
Temperature
| Jeju |
Air Temperature in December, °F
The highest day temperature in December 2025 was 67°F. The lowest night temperature was 34°F. The average values for day and night temperatures during December were 50.3°F и 45.6°F respectivly.
Jeju Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Jeju was 66.7°F. The maximum and minimum values were 64.6°F and 69.6°F respectively.
Most of the days in December are gloomy but you can also expect sunny days.
Precipitation Totals in December, in
Precipitation total in December for Jeju is 2.2 in. It makes december the least rainy month of the year.
The average wind speed in December is 14.1 mph. It makes December one of the most windy months of the year for Jeju.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Jeju in December is 4.3 hours.
Jeju on the Weather Map
| 0600 |  |
34°F | SE 29 mph |
| 0900 |  |
36°F | SE 27 mph |
| 1200 |  |
38°F | SE 30 mph |
| 1500 | |
38°F | SE 25 mph |
| 1800 | |
34°F | SE 21 mph |
| 2100 | |
36°F | SE 17 mph |
| 0000 |  |
36°F | SE 9 mph |
| 0300 | |
34°F | E 6 mph |