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 — and sunset is at —.

Days 1–4 Weather Summary

Light rain (total 6mm), mostly falling on Sat afternoon. Cool air temperatures (max 10°C on Thu night, min 7°C on Fri night). Winds decreasing (fresh winds from the WSW on Thu night, light winds from the SE by Sat night).

Days 5–7 Weather Summary

Light rain (total 2mm), mostly falling on Sun night. Low air temperatures (max 7°C on Sun night, min 4°C on Mon night). Winds increasing (light winds from the ESE on Sun night, fresh winds from the ENE by Wed afternoon).

Days 8–10 Weather Summary

Some drizzle, heaviest during Fri night. Mild temperatures (max 7°C on Fri afternoon, min 2°C on Sat afternoon). Winds increasing (light winds from the N on Fri afternoon, strong winds from the ENE by Sat morning).

Days 11–13 Weather Summary

A dusting of snow giving way to moderate rain (total 10mm) heaviest on Mon morning. Temperatures will be slightly above freezing (max 4°C on Mon afternoon, min 1°C on Sat night). Winds decreasing (fresh winds from the ENE on Sat night, light winds from the E by Tue night).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
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
10:28AM8.37m
10:54PM7.92m
11:18AM8.11m
11:48PM7.69m
12:16PM7.85m
00:52AM7.54m
1:24PM7.72m
2:03AM7.58m
2:37PM7.82m
Low Tide
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
4:34PM1.81m
4:50AM1.99m
5:25PM1.98m
5:46AM2.19m
6:24PM2.12m
6:51AM2.32m
7:31PM2.18m
8:03AM2.29m
Wave
height (m) 
direction
period (s) 
1.4
W
17
1.6
W
7
1.3
W
15
0.9
W
14
0.8
W
9
0.9
WSW
8
0.7
W
12
0.9
W
15
0.7
W
15
0.6
W
14
0.5
W
13
0.5
W
13
0.5
W
9
0.6
W
7
0.6
ENE
4
0.7
W
9
0.8
ENE
4
0.9
ENE
4
1.1
ENE
4
0.9
ENE
4
0.9
ENE
4
0.6
ENE
4
0.5
NE
3
0.2
W
8
0.5
W
6
1.1
ENE
4
1
ENE
4
0.8
ENE
4
0.5
ENE
3
0.5
W
8
0.3
W
9
0.3
W
13
0.3
W
12
0.3
W
8
0.6
ENE
3
0.3
W
7
rain showers
clear
clear
clear
part cloud
light rain
light rain
light rain
cloud
rain showers
cloud
cloud
part cloud
part cloud
light rain
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
cloud
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
snow showers
light rain
cloud
part cloud
cloud
light rain
rain shwrs
clear
clear
clear
some clouds
light rain
light rain
light rain
cloudy
rain shwrs
cloudy
cloudy
some clouds
some clouds
light rain
some clouds
cloudy
some clouds
clear
clear
clear
clear
some clouds
cloudy
rain shwrs
some clouds
some clouds
some clouds
cloudy
some clouds
snow shwrs
light rain
cloudy
some clouds
cloudy
light rain
 km/h
30
WSW
30
WSW
25
SW
15
S
25
SSE
30
SE
10
SE
20
ESE
10
SSE
10
E
10
ESE
10
E
15
E
20
ENE
20
ENE
25
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
25
NE
20
NE
5
N
30
NE
40
ENE
35
ENE
25
ENE
20
ENE
20
ENE
15
E
10
SE
10
E
15
ENE
25
ENE
10
NE
 mm 
1
2
2
1
1
1
1
5
5
max°C
10
10
10
8
9
9
9
8
8
7
7
7
5
6
7
7
6
5
4
4
5
4
6
7
6
4
3
2
2
2
1
3
4
2
3
3
Moonrise
8:21
9:15
9:56
10:26
10:48
11:04
11:18
11:30
11:41
11:54
12:09
12:29
Moonset
2:59
3:54
5:01
6:15
7:32
8:50
10:08
11:27
12:47
2:11
3:40
Sunrise
8:15
8:15
8:15
8:17
8:17
8:17
8:18
8:18
8:18
8:18
8:18
8:18
Sunset
4:06
4:06
4:07
4:07
4:07
4:08
4:08
4:09
4:10
4:12
4:12
4:13
Today's sea temperature in Llantwit Major is
10.0° C
(Statistics for 18 Dec 1981-2005 – mean: 11.1 max: 12.0 min: 10.3°C)
Issued (local time): 11 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest