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 05:33 AM and sunset is at 07:45 PM.

Days 1–3 Weather Summary

Light rain (total 6mm), mostly falling on Wed morning. Warm air temperatures (max 27°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light.

Days 4–6 Weather Summary

Heavy rain (total 27mm), heaviest during Fri morning. Warm air temperatures (max 29°C on Thu afternoon, min 25°C on Fri morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Warm (max 31°C on Mon afternoon, min 26°C on Sun night). Winds increasing (light winds from the SE on Sun afternoon, fresh winds from the ENE by Tue night).

Days 10–12 Weather Summary

Heavy rain (total 34mm), heaviest during Sat morning. Warm (max 28°C on Wed afternoon, min 26°C on Wed night). Winds increasing (fresh winds from the ENE on Wed afternoon, gales from the NE by Sat morning).

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
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
11:58AM1.72m
1:54AM2.19m
1:41PM1.68m
2:55AM2.14m
3:25PM1.77m
3:55AM2.11m
4:45PM1.96m
4:51AM2.11m
5:50PM2.21m
5:42AM2.12m
6:46PM2.45m
6:29AM2.15m
7:36PM2.64m
7:13AM2.17m
8:23PM2.76m
7:55AM2.18m
9:08PM2.79m
8:34AM2.17m
9:51PM2.74m
9:13AM2.12m
10:35PM2.63m
9:50AM2.04m
11:19PM2.47m
Low Tide
6:47AM1.14m
6:31PM0.60m
7:48AM1.10m
7:35PM0.77m
9:00AM1.00m
8:56PM0.90m
10:10AM0.82m
10:27PM0.95m
11:10AM0.60m
11:46PM0.91m
12:00PM0.36m
00:47AM0.85m
12:47PM0.15m
1:38AM0.79m
1:31PM-0.01m
2:22AM0.77m
2:13PM-0.10m
3:04AM0.79m
2:54PM-0.11m
3:43AM0.84m
3:34PM-0.05m
4:22AM0.91m
4:13PM0.09m
5:01AM0.99m
Wave
height (m) 
direction
period (s) 
0.5
NW
3.0
0.4
NW
3.0
0.6
W
5.0
0.8
WNW
5.0
0.5
W
5.0
0.4
WSW
5.0
0.4
SW
7.0
0.3
SW
7.0
0.6
ESE
4.0
0.6
SW
6.0
0.8
SW
6.0
0.8
SW
7.0
0.8
SW
6.0
0.6
SW
6.0
0.5
SW
5.0
0.4
SW
6.0
0.4
SSE
4.0
0.5
SSE
5.0
0.6
ESE
4.0
0.8
ESE
4.0
0.8
ESE
4.0
0.6
E
4.0
0.7
E
4.0
0.5
E
3.0
1.1
ENE
5.0
1.3
ENE
5.0
1.7
E
6.0
2.2
E
7.0
2.2
E
7.0
3
E
8.0
3.5
E
8.0
3.5
E
8.0
3.5
E
8.0
3
ENE
8.0
3
ENE
8.0
3.5
ENE
8.0
clear
rain showers
thunderstorm
clear
clear
part cloud
light rain
light rain
part cloud
cloud
cloud
mod rain
heavy rain
light rain
part cloud
thunderstorm
thunderstorm
rain showers
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
light rain
light rain
light rain
cloud
cloud
heavy rain
clear
rain shwrs
risk tstorm
clear
clear
some clouds
light rain
light rain
some clouds
cloudy
cloudy
mod rain
heavy rain
light rain
some clouds
risk tstorm
risk tstorm
rain shwrs
some clouds
cloudy
some clouds
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
light rain
light rain
light rain
cloudy
cloudy
heavy rain
 km/h
15
WNW
20
WNW
20
W
15
WNW
20
WNW
10
SSW
5
SSW
5
S
15
SSE
10
S
15
S
15
S
5
SSW
5
S
10
S
5
SSE
10
S
10
S
10
SSE
10
SE
15
SE
15
SE
20
E
15
E
25
ENE
30
ENE
30
ENE
40
ENE
40
ENE
45
ENE
45
ENE
45
ENE
45
ENE
40
ENE
40
ENE
50
ENE
 mm 
1
1
2
2
6
12
5
1
2
1
2
4
2
12
max°C
26
27
24
26
27
25
26
25
26
28
29
27
25
26
27
28
28
26
29
29
27
30
31
27
29
28
27
27
28
27
26
26
27
27
27
27
Moonrise
10:08
10:36
11:04
11:33
12:05
12:43
1:28
2:21
3:24
4:32
5:42
Moonset
8:39
9:44
10:49
11:55
1:03
2:13
3:26
4:38
5:45
6:45
7:34
8:15
Sunrise
5:33
5:33
5:33
5:35
5:35
5:35
5:37
5:37
5:37
5:39
5:39
5:39
Sunset
7:45
7:44
7:44
7:44
7:43
7:43
7:42
7:42
7:40
7:39
7:39
7:38
Today's sea temperature in Cheju is 26.7 °C (Statistics for 14 Jul 1981-2005 – mean: 24.4 max: 26.8 min: 22.3°C)
Issued (local time): 8 am Monday 14 Jul 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest