27.04
mon
mon
Day
64°F
SE 7 mph
Precip.
0%
0%
Night
57°F
NE 6 mph
Precip.
0%
0%
28.04
tue
tue
Day
63°F
SE 11 mph
Precip.
68%
68%
Night
54°F
SE 4 mph
Precip.
0%
0%
29.04
wed
wed
Day
55°F
SE 6 mph
Precip.
0%
0%
Night
54°F
S 6 mph
Precip.
0%
0%
30.04
thu
thu
Day
59°F
SE 9 mph
Precip.
0%
0%
Night
55°F
E 6 mph
Precip.
0%
0%
01.05
fri
fri
Day
64°F
SE 6 mph
Precip.
0%
0%
Night
57°F
E 7 mph
Precip.
0%
0%
02.05
sat
sat
Day
68°F
SE 5 mph
Precip.
0%
0%
Night
61°F
E 3 mph
Precip.
0%
0%
03.05
sun
sun
Day
59°F
W 12 mph
Precip.
100%
100%
Night
61°F
NE 11 mph
Precip.
76%
76%
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 60.5°F. The highest and lowest sea temperatures during the month were 61.9°F and 58.5°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 60.9°F. The highest and lowest sea temperatures during the month were 63.0°F and 59.2°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: 23:19
April 28, tuesday
0000
57°F
NE
6 mph
6 mph
0300
57°F
NE
8 mph
8 mph
0600
57°F
NE
8 mph
8 mph
0900
63°F
E
9 mph
9 mph
1200
63°F
SE
11 mph
11 mph
1500
61°F
SE
12 mph
12 mph
1800
55°F
SE
10 mph
10 mph
2100
55°F
SE
9 mph
9 mph
