Llantwit Major Sea Conditions and Tide Table

Llantwit Major 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 08:11 AM and sunset is at 04:05 PM.

Days 1–3 Weather Summary

Heavy rain (total 51mm), heaviest during Sun night. Cool air temperatures (max 12°C on Sun night, min 6°C on Tue night). Winds decreasing (fresh winds from the SSW on Sun night, calm by Tue night).

Days 4–6 Weather Summary

Light rain (total 8mm), mostly falling on Wed night. Cool air temperatures (max 12°C on Thu afternoon, min 6°C on Fri night). Winds decreasing (strong winds from the S on Thu afternoon, calm by Fri night).

Days 7–9 Weather Summary

Moderate rain (total 12mm), heaviest on Sat night. Mild temperatures (max 9°C on Sat night, min 6°C on Sat morning). Winds increasing (light winds from the ESE on Sat morning, fresh winds from the ESE by Sun night).

Days 10–12 Weather Summary

Light rain (total 8mm), mostly falling on Tue night. Mild temperatures (max 9°C on Tue morning, min 7°C on Wed night). Winds decreasing (fresh winds from the ENE on Tue night, calm by Fri morning).

Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
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
2:28PM7.06m
3:03AM7.01m
3:28PM7.19m
3:57AM7.29m
4:19PM7.44m
4:43AM7.63m
5:03PM7.74m
5:24AM7.98m
5:43PM8.05m
6:02AM8.30m
6:21PM8.31m
6:38AM8.56m
6:57PM8.49m
7:14AM8.75m
7:33PM8.59m
7:50AM8.85m
8:09PM8.60m
8:27AM8.85m
8:46PM8.52m
9:05AM8.77m
9:25PM8.37m
9:45AM8.60m
10:07PM8.17m
Low Tide
8:05AM2.90m
8:40PM2.76m
9:06AM2.82m
9:35PM2.63m
10:01AM2.61m
10:24PM2.42m
10:48AM2.32m
11:08PM2.17m
11:31AM2.03m
11:49PM1.91m
12:11PM1.76m
00:27AM1.69m
12:49PM1.56m
1:03AM1.54m
1:25PM1.45m
1:38AM1.45m
2:01PM1.42m
2:13AM1.45m
2:36PM1.45m
2:47AM1.51m
3:12PM1.54m
3:23AM1.62m
3:51PM1.66m
4:03AM1.79m
Wave
height (m) 
direction
period (s) 
1
W
11
1.1
W
9
1.4
W
9
1.2
W
9
0.8
W
13
0.7
W
14
0.6
W
14
0.6
W
14
0.6
W
14
0.6
W
14
0.8
W
9
1.1
W
8
1.2
W
13
1.3
W
13
1.8
W
12
1.6
W
16
1.1
W
15
0.8
W
14
0.6
W
13
0.5
W
13
0.9
W
9
0.8
W
12
0.9
W
15
1
W
11
0.8
W
8
0.7
W
8
0.5
W
7
0.5
E
3
0.5
E
3
0.9
ENE
4
0.8
ENE
4
0.6
ENE
3
0.5
ENE
3
0.4
W
7
0.3
W
9
0.2
W
12
part cloud
light rain
heavy rain
heavy rain
heavy rain
mod rain
light rain
part cloud
clear
cloud
cloud
mod rain
part cloud
light rain
cloud
cloud
part cloud
clear
part cloud
clear
rain showers
part cloud
light rain
light rain
cloud
cloud
part cloud
rain showers
part cloud
light rain
light rain
light rain
part cloud
clear
part cloud
part cloud
some clouds
light rain
heavy rain
heavy rain
heavy rain
mod rain
light rain
some clouds
clear
cloudy
cloudy
mod rain
some clouds
light rain
cloudy
cloudy
some clouds
clear
some clouds
clear
rain shwrs
some clouds
light rain
light rain
cloudy
cloudy
some clouds
rain shwrs
some clouds
light rain
light rain
light rain
some clouds
clear
some clouds
some clouds
 km/h
25
SSW
30
SSW
35
SSW
30
SSW
20
SSE
5
WNW
10
NNE
10
N
10
WNW
15
SSW
25
SSW
25
SSW
35
SSE
45
S
40
SW
20
SW
15
SW
5
SSW
5
ESE
10
SE
30
S
10
SE
20
E
25
ESE
30
E
25
ESE
20
E
25
E
20
E
40
ENE
30
E
25
ENE
20
E
15
E
15
E
10
E
 mm 
1
13
15
11
10
1
6
2
5
2
5
1
4
2
1
max°C
11
11
12
11
11
9
8
9
7
8
10
10
10
12
10
9
9
9
7
7
9
7
8
8
9
9
8
9
9
8
8
9
8
8
9
9
Moonrise
2:30
3:41
4:54
6:07
7:17
8:21
9:15
9:56
10:26
10:48
11:04
11:18
Moonset
12:58
1:11
1:27
1:48
2:18
2:59
3:54
5:01
6:15
7:32
8:50
10:08
Sunrise
8:11
8:11
8:12
8:14
8:14
8:15
8:15
8:15
8:17
8:17
8:17
8:18
Sunset
4:05
4:05
4:05
4:05
4:06
4:06
4:06
4:07
4:07
4:07
4:08
4:08
Today's sea temperature in Llantwit Major is
10.2° C
(Statistics for 14 Dec 1981-2005 – mean: 11.3 max: 12.3 min: 10.3°C)
Issued (local time): 5 am Sunday 14 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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