19.12
fri
fri
Day
59°F
N 2 mph
Precip.
0%
0%
Night
54°F
N 6 mph
Precip.
80%
80%
20.12
sat
sat
Day
64°F
E 6 mph
Precip.
0%
0%
Night
54°F
SE 9 mph
Precip.
0%
0%
21.12
sun
sun
Day
46°F
S 18 mph
Precip.
0%
0%
Night
39°F
S 13 mph
Precip.
100%
100%
22.12
mon
mon
Day
48°F
SW 12 mph
Precip.
0%
0%
Night
50°F
W 16 mph
Precip.
0%
0%
23.12
tue
tue
Day
55°F
W 13 mph
Precip.
0%
0%
Night
55°F
E 13 mph
Precip.
100%
100%
24.12
wed
wed
Day
46°F
SE 21 mph
Precip.
0%
0%
Night
41°F
S 15 mph
Precip.
0%
0%
25.12
thu
thu
Day
41°F
S 11 mph
Precip.
0%
0%
Night
41°F
S 8 mph
Precip.
70%
70%
26.12
fri
fri
Day
45°F
S 8 mph
Precip.
0%
0%
Night
43°F
S 6 mph
Precip.
0%
0%
27.12
sat
sat
Day
48°F
S 8 mph
Precip.
0%
0%
Night
43°F
SE 7 mph
Precip.
0%
0%
28.12
sun
sun
Day
48°F
S 11 mph
Precip.
0%
0%
Night
45°F
W 7 mph
Precip.
0%
0%
29.12
mon
mon
Day
55°F
NE 2 mph
Precip.
0%
0%
Night
52°F
NE 7 mph
Precip.
100%
100%
30.12
tue
tue
Day
50°F
SE 13 mph
Precip.
100%
100%
Night
45°F
SE 14 mph
Precip.
85%
85%
31.12
wed
wed
Day
46°F
S 13 mph
Precip.
81%
81%
Night
45°F
S 16 mph
Precip.
61%
61%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 65.6°F. The highest and lowest sea temperatures during the month were 67.6°F and 63.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 59.4°F. The highest and lowest sea temperatures during the month were 60.8°F and 57.6°F.
Air temperature in Jeju, °F
Precipitation total in Jeju, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Jeju
Jeju on a weather map
Places in South Korea:
Name
°F
24 Hours Forecast
Jeju
Local time: 01:41
December 19, friday
0300
46°F
N
5 mph
5 mph
0600
46°F
N
4 mph
4 mph
0900
50°F
N
3 mph
3 mph
1200
59°F
N
2 mph
2 mph
1500
61°F
N
2 mph
2 mph
1800
54°F
NW
4 mph
4 mph
2100
54°F
N
5 mph
5 mph
December 20, saturday
0000
54°F
N
6 mph
6 mph
