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 06:33 AM and sunset is at 06:12 PM.

Days 1–3 Weather Summary

Moderate rain (total 14mm), heaviest on Thu night. Cool air temperatures (max 12°C on Thu afternoon, min 3°C on Fri night). Winds decreasing (near gales from the WSW on Thu night, light winds from the WNW by Fri night).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 12°C on Tue afternoon, min 6°C on Sun night). Winds decreasing (fresh winds from the SW on Sun morning, light winds from the ESE by Tue night).

Days 7–9 Weather Summary

Mostly dry. Very mild (max 15°C on Wed afternoon, min 5°C on Fri night). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Very mild (max 12°C on Mon afternoon, min 3°C on Sun night). Wind will be generally light.

Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Fri
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
High Tide
1:03PM8.30m
1:54AM8.26m
2:50PM8.12m
3:34AM8.50m
4:14PM8.64m
4:41AM9.24m
5:09PM9.45m
5:29AM10.13m
5:52PM10.33m
6:09AM11.01m
6:28PM11.15m
6:45AM11.78m
7:03PM11.83m
7:19AM12.36m
7:37PM12.32m
7:54AM12.69m
8:11PM12.55m
8:28AM12.73m
8:46PM12.50m
9:04AM12.46m
9:23PM12.15m
9:42AM11.90m
10:02PM11.54m
10:23AM11.09m
10:47PM10.72m
11:12AM10.13m
11:42PM9.81m
12:18PM9.20m
Low Tide
6:37AM4.33m
7:12PM4.64m
8:07AM4.75m
8:55PM4.80m
9:56AM4.47m
10:30PM4.26m
11:07AM3.70m
11:27PM3.42m
11:54AM2.83m
00:09AM2.54m
12:31PM2.01m
00:45AM1.74m
1:06PM1.31m
1:19AM1.11m
1:39PM0.82m
1:53AM0.70m
2:12PM0.56m
2:26AM0.55m
2:45PM0.57m
3:01AM0.69m
3:20PM0.86m
3:38AM1.11m
3:58PM1.41m
4:18AM1.77m
4:39PM2.17m
5:05AM2.60m
5:29PM3.04m
6:04AM3.45m
6:36PM3.85m
Wave
height (m) 
direction
period (s) 
0.9
SW
4
1.1
SW
4
1.2
SW
5
0.8
WSW
4
0.7
WSW
4
0.2
W
4
0.1
W
2
0.2
WSW
2
0.1
SW
2
0.4
SW
3
0.6
WSW
4
0.3
W
2
0.5
SW
3
0.5
SW
3
0.3
SSW
2
0.4
SSW
3
0.4
SSW
3
0.1
W
6
0
W
11
0.1
NE
1
0.1
NE
2
0.1
NE
2
0.1
NE
2
0.1
NE
2
0.1
E
2
0
W
4
0
E
2
0.1
E
1
0.1
E
1
0.1
E
2
0.3
NE
2
0.1
NE
2
0.1
NE
2
0.2
NNE
2
0.1
E
2
0
E
1
0.1
NE
2
0
W
4
0.1
E
1
0.2
ENE
2
0.5
S
3
0.7
S
3
0.6
SSW
3
0.5
SW
3
0.1
SW
3
0.2
SSW
2
0.5
S
3
cloud
light rain
mod rain
rain showers
rain showers
clear
part cloud
part cloud
part cloud
cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
cloud
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
light rain
rain showers
rain showers
part cloud
mod rain
rain showers
thunderstorm
cloudy
light rain
mod rain
rain shwrs
rain shwrs
clear
some clouds
some clouds
some clouds
cloudy
clear
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
some clouds
clear
some clouds
some clouds
cloudy
some clouds
clear
clear
clear
clear
some clouds
cloudy
clear
clear
some clouds
clear
clear
clear
some clouds
some clouds
light rain
rain shwrs
rain shwrs
some clouds
mod rain
rain shwrs
risk tstorm
 km/h
45
SSW
40
SW
45
WSW
35
WSW
30
W
15
NW
10
WNW
20
W
10
WSW
25
SSW
25
WNW
15
WNW
25
SW
30
WSW
15
SSW
25
S
25
S
5
ESE
10
E
10
ENE
15
NE
10
NE
10
NE
10
ENE
15
E
5
ENE
10
ENE
10
ENE
10
ENE
10
NE
15
NE
15
NE
15
ENE
15
ENE
10
ENE
5
ENE
15
ENE
10
ESE
10
ENE
20
E
30
SSE
35
SSE
20
WSW
20
WSW
10
E
15
S
30
S
 mm 
2
9
2
1
1
4
2
6
1
1
max°C
10
12
11
7
7
4
8
9
6
9
10
7
10
10
7
11
12
9
12
15
13
12
15
12
8
10
9
8
11
9
9
11
9
8
12
10
10
13
10
12
10
10
9
10
6
9
9
Moonrise
3:43
4:26
4:57
5:20
5:37
5:51
6:04
6:16
6:28
6:44
7:03
7:31
8:11
9:08
10:22
11:46
Moonset
10:16
11:20
12:35
1:53
3:14
4:35
5:57
7:21
8:47
10:18
11:49
1:15
2:29
3:24
4:02
Sunrise
6:33
6:31
6:28
6:26
6:24
6:22
6:20
6:16
6:15
6:13
6:09
6:07
6:05
6:03
6:01
5:58
Sunset
6:12
6:13
6:15
6:16
6:17
6:20
6:22
6:22
6:24
6:27
6:29
6:30
6:31
6:34
6:35
6:37
Today's sea temperature in Cardiff is
8.5° C
(Statistics for 12 Mar 1981-2005 – mean: 9.0 max: 10.3 min: 6.8°C)
Issued (local time): 5 am Thursday 12 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
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