World Resorts South Korea Jeju Weather

Jeju 14 Days Forecast

26.12
fri
Day
39°F
SE 23 mph
Precip.
69%
Night
39°F
S 14 mph
Precip.
0%
27.12
sat
Day
43°F
SE 11 mph
Precip.
0%
Night
41°F
SE 4 mph
Precip.
0%
28.12
sun
Day
48°F
E 2 mph
Precip.
0%
Night
43°F
N 6 mph
Precip.
0%
29.12
mon
Day
55°F
E 14 mph
Precip.
0%
Night
48°F
S 8 mph
Precip.
0%
30.12
tue
Day
46°F
S 9 mph
Precip.
0%
Night
41°F
S 16 mph
Precip.
0%
31.12
wed
Day
37°F
S 17 mph
Precip.
0%
Night
39°F
S 11 mph
Precip.
0%
01.01
thu
Day
41°F
S 11 mph
Precip.
0%
Night
41°F
SE 11 mph
Precip.
100%
02.01
fri
Day
41°F
SE 19 mph
Precip.
100%
Night
39°F
S 17 mph
Precip.
70%
03.01
sat
Day
41°F
S 14 mph
Precip.
86%
Night
41°F
SE 12 mph
Precip.
68%
04.01
sun
Day
45°F
SE 17 mph
Precip.
83%
Night
43°F
SE 21 mph
Precip.
100%
05.01
mon
Day
43°F
SE 24 mph
Precip.
81%
Night
43°F
SE 22 mph
Precip.
100%
06.01
tue
Day
39°F
SE 24 mph
Precip.
100%
Night
34°F
SE 22 mph
Precip.
100%
07.01
wed
Day
39°F
SE 16 mph
Precip.
100%
Night
39°F
SE 20 mph
Precip.
100%
08.01
thu
Day
37°F
S 12 mph
Precip.
78%
Night
37°F
S 10 mph
Precip.
78%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 65.4°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
+36°F
SE 29 mph
Feels like: +25°F
Precip.: 100%
Places in South Korea:
Name
°F
+9°F
+19°F
+16°F
+27°F
+16°F
+36°F
24 Hours Forecast
Jeju
Local time: 03:01
December 26, friday
0600
36°F
SE
27 mph
0900
37°F
S
25 mph
1200
39°F
SE
23 mph
1500
39°F
SE
21 mph
1800
39°F
S
19 mph
2100
39°F
S
17 mph
December 27, saturday
0000
39°F
S
14 mph
0300
39°F
S
12 mph
Units of measurement: °C / °F