World Resorts South Korea Jeju Weather

Jeju 14 Days Forecast

21.12
sun
Day
43°F
S 19 mph
Precip.
80%
Night
39°F
S 14 mph
Precip.
0%
22.12
mon
Day
46°F
SW 11 mph
Precip.
0%
Night
48°F
W 10 mph
Precip.
82%
23.12
tue
Day
61°F
N 7 mph
Precip.
0%
Night
57°F
E 19 mph
Precip.
100%
24.12
wed
Day
50°F
SE 16 mph
Precip.
61%
Night
45°F
S 16 mph
Precip.
0%
25.12
thu
Day
45°F
S 22 mph
Precip.
68%
Night
39°F
S 19 mph
Precip.
63%
26.12
fri
Day
43°F
SE 9 mph
Precip.
0%
Night
39°F
S 12 mph
Precip.
100%
27.12
sat
Day
41°F
S 13 mph
Precip.
0%
Night
39°F
S 9 mph
Precip.
0%
28.12
sun
Day
43°F
S 8 mph
Precip.
0%
Night
43°F
S 2 mph
Precip.
0%
29.12
mon
Day
50°F
E 2 mph
Precip.
0%
Night
45°F
N 5 mph
Precip.
0%
30.12
tue
Day
55°F
E 17 mph
Precip.
100%
Night
41°F
SE 23 mph
Precip.
100%
31.12
wed
Day
39°F
SE 23 mph
Precip.
100%
Night
36°F
SE 25 mph
Precip.
100%
01.01
thu
Day
39°F
S 17 mph
Precip.
0%
Night
39°F
SE 9 mph
Precip.
0%
02.01
fri
Day
45°F
SE 11 mph
Precip.
0%
Night
43°F
SE 17 mph
Precip.
100%
03.01
sat
Day
43°F
SE 19 mph
Precip.
100%
Night
43°F
SE 24 mph
Precip.
66%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 65.5°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

Sunniest months:
May 15 days
October 14 days
April 14 days
Warmest months:
August 84.5 °F
July 82.0 °F
September 77.7 °F
Warmest sea temp:
August 81.2 °F
September 77.5 °F
July 76.6 °F
Coldest months:
January 44.8 °F
February 46.2 °F
December 48.5 °F
Rainiest months:
August 8 days
September 7 days
July 7 days
Windiest months:
January 14.4 mph
December 14.3 mph
February 14.0 mph

Jeju on a weather map

Jeju
+39°F
S 14 mph
Feels like: +32°F
Precip.: 0%
Places in South Korea:
Name
°F
+21°F
+30°F
+27°F
+37°F
+30°F
+39°F
24 Hours Forecast
Jeju
Local time: 19:36
December 21, sunday
2100
39°F
S
14 mph
December 22, monday
0000
39°F
S
14 mph
0300
39°F
S
11 mph
0600
39°F
S
6 mph
0900
41°F
SW
7 mph
1200
46°F
SW
11 mph
1500
48°F
W
11 mph
1800
46°F
W
10 mph
Units of measurement: °C / °F