Cheju Sea Conditions and Tide Table

Cheju Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 07:35 AM and sunset is at 05:30 PM.

Days 1–3 Weather Summary

Mostly dry. Cool air temperatures (max 10°C on Wed morning, min 2°C on Thu night). Winds decreasing (near gales from the NW on Thu afternoon, light winds from the NNW by Fri night).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 14°C on Mon morning, min 5°C on Sat morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Mild temperatures (max 9°C on Tue morning, min 2°C on Wed night). Winds decreasing (fresh winds from the NNW on Tue night, calm by Thu night).

Days 10–12 Weather Summary

Light rain (total 9mm), mostly falling on Mon morning. Mild temperatures (max 5°C on Fri morning, min 2°C on Sun night). Winds increasing (light winds from the N on Fri morning, strong winds from the WNW by Sun afternoon).

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
Wave Height Map
High Tide
2:20PM2.08m
1:38AM1.45m
3:14PM2.10m
3:16AM1.54m
4:04PM2.13m
4:30AM1.72m
4:51PM2.16m
5:30AM1.95m
5:35PM2.18m
6:25AM2.20m
6:18PM2.19m
7:15AM2.43m
6:59PM2.18m
8:05AM2.61m
7:40PM2.16m
8:55AM2.72m
8:22PM2.12m
9:41AM2.74m
9:03PM2.07m
10:31AM2.69m
9:45PM1.99m
11:22AM2.58m
10:31PM1.89m
Low Tide
6:34AM0.56m
8:12PM1.14m
7:35AM0.65m
9:22PM1.02m
8:47AM0.72m
10:22PM0.85m
10:04AM0.75m
11:10PM0.63m
11:16AM0.73m
11:55PM0.40m
12:18PM0.70m
00:37AM0.18m
1:14PM0.67m
1:19AM-0.00m
2:04PM0.67m
2:02AM-0.13m
2:52PM0.69m
2:44AM-0.19m
3:37PM0.76m
3:27AM-0.18m
4:23PM0.85m
4:11AM-0.08m
5:10PM0.95m
4:56AM0.09m
Wave
height (m) 
direction
period (s) 
1.2
NW
5
1.6
NNW
6
1.6
NNW
6
2
NNW
6
3
NW
7
3
NW
7
2.2
NNW
6
1.7
NNW
6
1.2
NNW
5
0.6
NNW
4
0.4
NNW
3
0.3
NNW
3
0.1
NW
2
0.1
W
1
0.3
SW
2
0.9
WSW
4
1
W
5
0.5
W
5
0.4
NNW
3
0.7
NNW
4
1.5
NNW
5
1.6
NNW
5
1.6
NNW
6
1.2
N
5
0.8
NNW
4
0.4
NNW
4
0.1
NW
4
0.4
NNW
3
0.9
NNW
4
1.5
NNW
5
1.5
NNW
5
1.4
NNW
5
1.3
NNW
5
1.6
NW
6
2.2
WNW
6
2.2
WNW
7
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
clear
clear
clear
clear
clear
some clouds
clear
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
light rain
light rain
 km/h
20
NNW
30
NNW
30
NNW
40
NNW
55
NW
50
NW
40
NNW
35
NNW
20
NNW
15
NNW
15
NNW
5
NW
5
SW
10
W
10
SSW
15
WSW
20
WNW
5
NNW
10
NW
20
NNW
25
N
30
N
30
N
20
N
15
N
10
NNE
5
NNE
15
N
25
NNW
25
N
25
N
30
NNW
25
NNW
30
NW
45
WNW
35
NW
 mm 
1
2
4
max°C
10
9
7
8
6
3
4
4
5
6
6
6
9
10
10
14
14
11
9
9
7
4
5
3
4
4
5
5
5
5
5
5
5
5
5
3
Moonrise
10:33
11:03
11:31
11:58
12:25
12:56
1:31
2:13
3:04
4:06
5:16
6:30
Moonset
9:22
10:24
11:26
12:29
1:34
2:43
3:56
5:11
6:24
7:31
8:27
Sunrise
7:35
7:35
7:35
7:35
7:35
7:37
7:37
7:37
7:37
7:37
7:37
7:37
Sunset
5:30
5:30
5:31
5:31
5:32
5:32
5:34
5:35
5:36
5:37
5:37
5:37
Today's sea temperature in Cheju is
18.1° C
(Statistics for 24 Dec 1981-2005 – mean: 15.7 max: 17.8 min: 13.9°C)
Issued (local time): 8 am Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest