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 05:26 AM and sunset is at 08:52 PM.

Days 1–3 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Cool air temperatures (max 14°C on Tue afternoon, min 6°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed morning, calm by Thu night).

Days 4–6 Weather Summary

Light rain (total 7mm), mostly falling on Fri afternoon. Cool air temperatures (max 13°C on Sun morning, min 6°C on Fri night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 3mm), mostly falling on Mon night. Very mild (max 19°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Very mild (max 19°C on Thu morning, min 10°C on Fri night). Wind will be generally light.

Days 13–16 Weather Summary

Mostly dry. Very mild (max 16°C on Mon afternoon, min 9°C on Tue night). Winds increasing (light winds from the NW on Sun night, fresh winds from the NW by Wed afternoon).

Tuesday
12
Wednesday
13
Thursday
14
Friday
15
Saturday
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wed
27
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
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High Tide
4:44PM9.42m
5:07AM9.98m
5:34PM10.14m
5:54AM10.67m
6:18PM10.87m
6:37AM11.31m
7:00PM11.52m
7:19AM11.81m
7:40PM12.02m
8:00AM12.12m
8:21PM12.30m
8:42AM12.18m
9:04PM12.32m
9:25AM11.99m
9:47PM12.08m
10:10AM11.57m
10:34PM11.62m
10:59AM10.97m
11:25PM11.01m
11:54AM10.30m
00:22AM10.38m
12:57PM9.71m
1:30AM9.87m
2:10PM9.37m
2:44AM9.66m
3:24PM9.37m
3:53AM9.76m
4:28PM9.65m
Low Tide
10:25AM3.58m
10:50PM3.47m
11:21AM2.99m
11:43PM2.82m
12:09PM2.35m
00:30AM2.17m
12:53PM1.76m
1:14AM1.61m
1:35PM1.30m
1:56AM1.20m
2:17PM1.04m
2:39AM1.02m
2:59PM1.00m
3:24AM1.06m
3:43PM1.21m
4:10AM1.33m
4:29PM1.62m
4:59AM1.78m
5:19PM2.16m
5:52AM2.32m
6:15PM2.74m
6:51AM2.85m
7:17PM3.25m
7:57AM3.23m
8:25PM3.55m
9:07AM3.37m
9:35PM3.58m
10:15AM3.26m
10:41PM3.37m
Wave
Height (m)
Direction
Period (s)
0.2
WSW
2
0.3
WNW
2
0.3
WSW
3
0.6
W
3
0.7
WNW
3
0.4
WNW
3
0.2
NNW
2
0.2
N
2
0.2
NNE
2
0
W
6
0
W
5
0.1
N
2
0
W
3
0.2
WSW
2
0.1
W
3
0
W
1
0.1
SW
2
0.3
WSW
3
0.4
SW
3
0.2
WSW
2
0.4
SW
3
0.4
SSW
3
0.4
SW
3
0.2
WSW
2
0.1
SW
2
0.3
SW
3
0.2
SSW
2
0.2
SSW
2
0.3
WSW
2
0.1
W
2
0.1
SW
3
0.2
WSW
3
0.1
W
3
0
W
9
0.1
SW
2
0.2
WSW
2
0.2
WSW
2
0.4
SW
3
0.1
W
3
0
W
4
0.4
SW
3
0.2
WSW
3
0.2
WSW
2
0.4
WSW
3
0.2
W
2
0.3
NW
2
0.4
NW
3
part cloud
part cloud
clear
rain showers
part cloud
part cloud
light rain
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
part cloud
cloud
part cloud
light rain
light rain
cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
cloud
clear
part cloud
part cloud
some clouds
some clouds
clear
rain shwrs
some clouds
some clouds
light rain
rain shwrs
rain shwrs
rain shwrs
rain shwrs
some clouds
some clouds
some clouds
some clouds
some clouds
light rain
some clouds
cloudy
some clouds
light rain
light rain
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
cloudy
rain shwrs
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
clear
clear
clear
cloudy
clear
some clouds
some clouds
km/h
20
W
25
WNW
20
W
40
WNW
35
NW
25
NW
20
NNW
20
NNW
15
N
5
N
10
NW
10
NNE
5
W
20
W
10
NW
10
SSW
15
WSW
15
W
20
WSW
20
WSW
20
SSW
20
SSW
20
SSW
15
WSW
15
SSW
20
SW
15
SSW
20
SW
20
W
15
W
15
WNW
20
WNW
10
N
5
SSW
20
W
10
W
15
W
20
WNW
10
WNW
10
W
20
W
10
W
15
WSW
30
W
15
NW
20
NW
30
NW
1
1
3
1
1
3
3
1
2
3
max °C
13
14
10
11
12
9
11
12
8
11
12
9
11
12
9
13
11
10
13
14
12
13
15
14
17
19
16
19
19
16
16
17
13
14
15
11
15
15
12
15
16
14
16
15
13
12
13
Moonrise
3:26
3:39
3:52
4:08
4:29
5:00
5:46
6:51
8:14
9:42
11:09
12:32
1:50
3:05
4:19
5:32
Moonset
3:24
4:46
6:12
7:44
9:19
10:49
12:04
12:57
1:33
1:57
2:14
2:28
2:39
2:50
3:02
Sunrise
5:26
5:24
5:22
5:22
5:20
5:18
5:16
5:16
5:13
5:13
5:11
5:11
5:09
5:07
5:07
5:05
Sunset
8:52
8:52
8:54
8:57
8:58
8:59
9:00
9:01
9:04
9:05
9:07
9:07
9:08
9:10
9:12
9:13
Today's sea temperature in Cardiff is
12.9° C
(Statistics for 12 May 1981-2005 – mean: 11.0 max: 12.2 min: 10.1°C)
Issued (local time): 12 pm Tuesday 12 May 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest