Cardiff Sea Conditions and Tide Table

Cardiff 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 — and sunset is at 04:06 PM.

Days 1–4 Weather Summary

Mostly dry. Low air temperatures (max 6°C on Tue afternoon, min 1°C on Wed morning). Mainly strong winds.

Days 5–7 Weather Summary

Mostly dry. Icy conditions (max 4°C on Fri afternoon, min 0°C on Sun morning). Winds decreasing (fresh winds from the NE on Sat afternoon, calm by Mon morning).

Days 8–10 Weather Summary

Mostly dry. Mild temperatures (max 6°C on Wed morning, min 2°C on Mon night). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Very mild (max 10°C on Sat night, min 5°C on Thu afternoon). Wind will be generally light.

Tue
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sun
4
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
AM
Wave Height Map
High Tide
9:19PM10.83m
9:38AM11.07m
10:00PM10.53m
10:20AM10.74m
10:43PM10.18m
11:05AM10.36m
11:31PM9.82m
11:56AM9.99m
00:27AM9.51m
12:56PM9.69m
1:33AM9.37m
2:04PM9.59m
2:43AM9.49m
3:13PM9.75m
3:48AM9.88m
4:16PM10.13m
4:46AM10.37m
5:12PM10.56m
5:39AM11.00m
6:04PM11.09m
6:28AM11.58m
6:52PM11.54m
7:15AM12.03m
Low Tide
3:21PM2.00m
3:35AM2.18m
4:01PM2.22m
4:16AM2.44m
4:43PM2.51m
4:59AM2.75m
5:28PM2.82m
5:46AM3.07m
6:18PM3.11m
6:40AM3.35m
7:15PM3.31m
7:41AM3.51m
8:18PM3.36m
8:49AM3.48m
9:25PM3.20m
9:58AM3.20m
10:30PM2.84m
11:03AM2.78m
11:30PM2.42m
12:01PM2.20m
00:24AM1.90m
12:53PM1.65m
1:14AM1.47m
Wave
height (m) 
direction
period (s) 
0.6
NE
3
0.6
NE
3
0.7
NE
3
0.6
NE
3
0.7
NE
4
1
NE
4
0.8
ENE
4
0.5
NE
3
0.6
NE
3
0.6
NE
3
0.4
NE
3
0.5
NE
3
0.5
NE
3
0.6
NE
3
0.6
NE
3
0.5
NE
3
0.1
NE
2
0
W
4
0
W
13
0.1
NE
1
0.1
NE
2
0.1
NE
2
0.1
N
2
0.1
W
2
0.2
N
2
0.1
N
1
0.1
N
2
0.1
N
2
0.1
W
2
0.2
W
2
0.3
W
2
0.2
W
2
0.3
WSW
3
0.4
WSW
3
0.2
WSW
3
0.1
W
4
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloudy
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
clear
cloudy
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
clear
clear
clear
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
 km/h
35
NE
35
ENE
35
NE
35
ENE
35
NE
45
NE
40
ENE
30
NE
30
NE
30
NE
25
NE
25
NE
25
NE
30
NE
30
ENE
25
ENE
10
NE
5
ENE
0
NNE
10
NE
10
NE
10
NE
5
NNE
15
WNW
15
NNW
10
NNW
10
NNW
10
NNW
15
NW
15
WNW
20
WNW
15
WNW
20
W
25
W
10
W
10
W
 mm 
max°C
6
5
2
3
3
3
3
1
3
4
2
4
4
3
2
3
2
2
3
2
3
5
4
6
6
5
5
5
7
7
7
7
9
9
10
9
Moonrise
11:04
11:17
11:29
11:40
11:53
12:08
12:27
12:56
1:38
2:40
4:01
Moonset
7:30
8:49
10:06
11:25
12:45
2:09
3:38
5:11
6:40
7:57
8:54
9:32
Sunrise
8:15
8:17
8:17
8:17
8:17
8:17
8:18
8:18
8:17
8:17
8:17
8:17
Sunset
4:06
4:07
4:07
4:07
4:08
4:09
4:10
4:12
4:13
4:14
4:15
4:15
Today's sea temperature in Cardiff is
9.0° C
(Statistics for 23 Dec 1981-2005 – mean: 11.0 max: 12.0 min: 10.1°C)
Issued (local time): 5 pm Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest