Llantwit Major Surf Break

Lat Long: 51.39° N 3.50° W

Llantwit Major 48 hour detailed Surf Forecast

Issued: 12 pm 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Llantwit Major sea temperature is
18.9°C
3.2° 

Llantwit Major surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Llantwit Major today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 4ft (1.2m), 7s period with W swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 4.5ft (1.3m), 6s period with W swell.
  • Evening surf: Evening surf (18 Sep, local time) - 5.5ft (1.7m), 7s period with W swell.

The current surf forecast for Llantwit Major at 5PM is: 1.5m 6s primary swell from a West direction (forecast issued at 12:00pm September 18). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (18 Sep)4ft (1.2m)7s
Afternoon (18 Sep)4.5ft (1.3m)6s
Evening (18 Sep)5.5ft (1.7m)7s

Table - waves today at Llantwit Major. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 2mm), mostly falling on Sat morning. Very mild (max 18°C on Sat morning, min 14°C on Sat night). Winds decreasing (strong winds from the WSW on Fri afternoon, light winds from the WNW by Sun night).

Fri
18
Saturday
19
Sunday
20
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
W
7
1.2
W
7
1.4
W
6
1.6
W
7
1.7
W
8
1.6
W
8
1.6
W
8
1.6
W
8
1.7
W
8
1.7
W
8
1.6
W
8
1.4
W
8
1.1
W
8
0.9
W
7
0.9
W
7
0.8
W
7
0.9
W
10
0.8
W
10
0.7
W
9
0.6
W
9
0.6
W
9
Wave Graph
Metric surfscale
Energy kJ
113
128
132
229
332
310
310
302
346
359
326
229
138
85
87
67
149
118
83
58
57
Wind (km/h)
30
W
35
WSW
35
WSW
40
WSW
35
WSW
35
WSW
35
WSW
35
SW
40
SW
35
WSW
35
W
30
W
25
WSW
25
W
20
W
15
NW
20
NW
15
WNW
15
W
10
W
10
WNW
Wind State
cross-on
cross-on
on
on
on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
High Tide
11:37AM7.28m
00:01AM6.82m
12:27PM6.60m
1:05AM6.19m
1:52PM6.13m
Low Tide
5:40PM2.75m
6:03AM3.13m
6:41PM3.37m
7:20AM3.64m
8:22PM3.70m
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
light rain
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:54
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:22
7:20
7:17
 mm
1
1
Temp °C
16
16
15
16
17
17
17
16
17
18
18
17
16
16
15
14
14
15
16
15
14
Feels °C
11
10
8
9
12
12
12
11
12
13
13
13
12
12
12
11
11
12
13
13
12
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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