Surf Forecasts:
Llantwit Major surf forecast from 1 Sep 2026:
- Most powerful swell: Friday 4 Sep, 4AM (local time) - 5ft (1.5m), 8s period, W swell with 259 kJ wave energy.
Best Forecast Surf Conditions for Llantwit Major this week:
The most powerful waves expected at Llantwit Major in the next 16 days are 1.5m 8s and forecast to arrive on Friday (Sep 04) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Fri 4th Sep) | 5ft (1.5m) 8s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming our way for the next couple of weeks.
To be honest, the outlook is a bit of a struggle. We’ve got a long stretch of poor conditions ahead, with a solid nine days of nothing worth getting excited about. The first whisper of anything surfable doesn’t arrive until the morning of the 11th of September.
For the first week and a half, Llantwit Major is getting battered by onshore and cross-onshore winds, mostly from the west and southwest. The swell is small and weak, with energy hanging around 24 to 207. The wind is just too strong and in the wrong direction, keeping the waves messy and choppy. It’s a write-off.
The first real glimmer of hope comes on the morning of Friday, the 11th of September. The wind drops right out, turning glassy. The swell is only 2ft from the west with a 9-second period, and the energy is a paltry 54. The surf is tiny, but it will be clean. It’s not a standout, but it’s the first sign of life.
The next morning, Saturday the 12th of September, brings a better chance. A clean easterly offshore wind is blowing at 9 mph, and the cross-offshore flow will keep the faces tidy. The swell is 3ft from the west with an 8-second period, and the energy is 88. It’s small, but with that offshore wind, the point should offer up a few little peelers. This is the best of the whole window.
Later in the second week, on Tuesday the 15th of September, there’s a little more promise. The morning shows a 2ft swell from the WSW with a nice 12-second period, giving it a bit more push, and the energy is 111. The wind is light and cross-offshore, so the waves will be clean. The afternoon goes glassy, but the swell drops to 2ft. It’s small, but the quality makes it worth a look.
The water temperature is about average for this time of year, so nothing unusual to report there.
The biggest issue here is the lack of consistent swell and the poor wind. This area is prone to these blank runs, so don’t be too disheartened. The standout window is the morning of the 12th of September, when the offshore wind and small west swell could give you a couple of fun ones. After that, the 15th of September morning is worth a paddle too, but keep your expectations in check.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Warm (max 20°C on Wed afternoon, min 15°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Warm (max 21°C on Sun afternoon, min 13°C on Fri night). Winds decreasing (strong winds from the WSW on Thu night, calm by Sat night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 9 | W 9 | W 5 | W 6 | WSW 7 | W 7 | W 7 | W 7 | WSW 7 | W 8 | W 8 | W 6 | WSW 9 | W 9 | W 9 | W 7 | W 9 | W 8 | WSW 12 | W 11 | W 10 |
Wave Graph | |||||||||||||||||||||
78 | 74 | 19 | 24 | 121 | 108 | 106 | 155 | 186 | 182 | 207 | 63 | 29 | 57 | 41 | 8 | 7 | 12 | 50 | 114 | 177 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | glassy | cross-off | cross-on | cross-off | cross-on | cross-on | cross-on |
High Tide | 9:58AM9.49m | 10:17PM9.49m | 10:37AM9.12m | 10:58PM8.97m | 11:20AM8.57m | 11:45PM8.29m | 12:12PM7.90m | 00:45AM7.56m | 1:22PM7.29m | 2:08AM7.04m | 2:54PM7.08m | 3:43AM7.09m | 4:22PM7.49m | ||||||||
Low Tide | 3:52PM0.66m | 4:12AM0.82m | 4:28PM1.02m | 4:50AM1.29m | 5:10PM1.54m | 5:36AM1.90m | 6:04PM2.17m | 6:38AM2.55m | 7:22PM2.74m | 8:10AM2.98m | 9:14PM2.89m | 10:04AM2.84m | 10:56PM2.41m | ||||||||
6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | |
— | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — | |
mm | — | — | — | 1 | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 18 | 20 | 18 | 19 | 20 | 20 | 17 | 17 | 16 | 15 | 16 | 15 | 20 | 21 | 17 | 19 | 20 | 17 |
Feels °C | 14 | 14 | 14 | 16 | 17 | 15 | 15 | 16 | 15 | 14 | 11 | 12 | 12 | 14 | 14 | 17 | 17 | 15 | 17 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | W 5 | W 6 | — | W 7 | W 7 | — | — | — | — | W 6 | W 6 | W 9 | W 9 | W 7 | W 6 | W 8 | W 9 | W 11 | W 10 |
78 | — | 19 | 24 | — | 108 | 106 | — | — | — | — | 63 | 29 | 57 | 41 | 8 | 7 | 12 | 27 | 114 | 177 | |
Swell 2 Height (m) Direction Period (s) | — | — | W 8 | — | — | — | — | — | — | — | — | WSW 9 | WSW 9 | — | — | W 9 | W 9 | — | WSW 12 | — | — |
— | — | 5 | — | — | — | — | — | — | — | — | 16 | 25 | — | — | 6 | 6 | — | 50 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | W 9 | — | — | WSW 7 | — | — | W 7 | WSW 7 | W 8 | W 8 | — | — | — | — | — | SSE 3 | — | — | W 3 | — |
— | 74 | — | — | 121 | — | — | 155 | 186 | 182 | 207 | — | — | — | — | — | 3 | — | — | 5 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 129 | 155 | 129 | 461 | 300 | 300 | 142 | 300 | 173 | 349 | 348 | 127 | 39 | 142 | 21 | 84 | 59 | 59 | 74 | 88 | 28 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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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.











