Llantwit Major Surf Break

Lat Long: 51.39° N 3.50° W

Llantwit Major Surf Forecast and Surf Report

Issued: 12 am 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Llantwit Major sea temperature is
18.9°C
3.1° 

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


Llantwit Major surf forecast from 18 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 4PM (local time) - 1.5ft (0.5m), 11s period, W swell with glassy winds.
  • Most powerful swell: Saturday 19 Sep, 4PM (local time) - 5ft (1.6m), 8s period, W swell with 307 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 22 Sep, 4PM (local time) - 1.5ft (0.5m), 11s period with W swell.

Best Forecast Surf Conditions for Llantwit Major this week:

The surf forecast for Llantwit Major over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 22) at 4PM. The primary swell is predicted to be 0.5m and 11s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Llantwit Major in the next 16 days are 1.6m 8s and forecast to arrive on Saturday (Sep 19) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Thursday (Sep 24) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Tue 22nd Sep)1.5ft (0.5m) 11s
Best Surf 4PM (Tue 22nd Sep)1.5ft (0.5m) 11s
Most Powerful 4PM (Sat 19th Sep)5ft (1.6m) 8s

Table - best surf conditions forecast for Llantwit Major over the next 16 days.


Short Range Forecast

Some drizzle, heaviest during Sat morning. Very mild (max 18°C on Sat morning, min 13°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri afternoon, light winds from the WNW by Sun afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Tue afternoon, min 14°C on Sun night). Wind will be generally light.

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
0
0
0
Swell
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
1.3
W
6
1.6
W
8
1.6
W
8
1.6
W
8
0.9
W
7
0.9
W
7
0.7
W
10
0.5
W
8
0.4
WSW
10
0.4
W
7
0.3
W
7
0.4
W
10
0.5
W
11
0.6
W
11
0.6
W
10
0.6
W
9
0.4
WSW
12
0.4
WSW
12
0.3
W
8
0.2
W
10
Wave Graph
Metric surfscale
Energy kJ
113
114
294
294
307
82
76
87
29
31
17
9
30
57
86
74
61
47
45
12
8
Wind (km/h)
25
W
35
WSW
35
WSW
35
SW
30
W
25
W
15
NW
15
W
5
WNW
10
W
15
WNW
10
WNW
0
WNW
5
WNW
5
ESE
10
ESE
10
W
5
ENE
15
E
15
S
10
E
Wind State
cross-on
on
on
on
cross-on
cross-on
cross
cross-on
cross
cross-on
cross-on
cross
glassy
glassy
glassy
cross-off
cross-on
glassy
cross-off
cross-on
cross-off
High Tide
11:37AM7.28m
00:01AM6.82m
12:27PM6.60m
1:05AM6.19m
1:52PM6.13m
2:52AM5.96m
3:43PM6.24m
4:25AM6.35m
4:53PM6.84m
5:20AM7.03m
5:39PM7.59m
6:00AM7.77m
6:17PM8.35m
Low Tide
5:15AM2.48m
5:40PM2.75m
6:03AM3.13m
6:41PM3.37m
7:20AM3.64m
8:22PM3.70m
9:12AM3.70m
10:10PM3.45m
10:40AM3.24m
11:16PM2.84m
11:34AM2.58m
00:00AM2.14m
12:14PM1.90m
00:36AM1.47m
cloud
cloud
part cloud
rain showers
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:54
6:54
6:56
6:58
7:00
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:22
7:20
7:17
7:15
7:13
7:10
7:08
 mm
1
Temp °C
16
16
17
18
17
16
15
16
15
18
19
18
20
21
20
20
20
18
21
23
19
Feels °C
10
9
12
14
13
12
13
14
13
17
18
18
21
22
21
22
20
18
20
20
18
  • 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
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Information about the Llantwit Major Surf forecast

The above surf forecast table for Llantwit Major provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Llantwit Major can be found by selecting the local surf guide option on the grey menu. Our Llantwit Major surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Llantwit Major) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Llantwit Major may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Llantwit Major is 8 km (5 miles) from the city of Nash Point. If you plan a holiday in Wales - South East, look for hotels and other accommodation in Nash Point. Nash Point has rooms for a wide range of budgets as well as car hire and transport links.

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