Surf Forecasts:
Llantwit Major surf forecast from 30 Aug 2026:
- Most powerful swell: Friday 4 Sep, 10AM (local time) - 8ft (2.4m), 8s period, W swell with 816 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 2.4m 8s and forecast to arrive on Friday (Sep 04) at 10AM. 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 | 10AM (Fri 4th Sep) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what Llantwit Major’s got cooking over the next couple of weeks.
First up, I gotta be straight with you – it’s a long, grim wait ahead. For the first week and a half, it’s a total write-off. From Sunday the 30th of August all the way through to the morning of Saturday the 12th of September, there’s nothing worth paddling out for. Dirty onshore winds, lumpy bumpy conditions, and the swell is all over the place with weak energy usually under 300, except for a brutal near-gale day on the 4th of September when the energy spiked to 816 but it was completely blown out. Honestly, that Friday the 4th looks more interesting for kite surfers than anyone with a paddle – 8ft of slop with 31 mph cross-onshore wind equals zero fun for us.
We finally catch a break on Saturday the 12th of September. The morning is just surfable, with a light breeze and clean conditions, but the real window opens Saturday afternoon. That’s our first standout. Wind goes light easterly, cross-offshore, and the waves clean right up. Swell is a playful 5ft from the west with a short 7-second period, so not much punch, but the energy is moderate at 283. This is a beginner-friendly size, so if you’re looking for a gentle intro, this is your moment.
But the best of the whole run comes on Sunday the 13th of September morning. That is the clear standout. We’ve got 7ft of west swell running with a 10-second period, which brings decent power (energy reading 745), and that easterly breeze at 16 mph is still cross-offshore, keeping the face clean. That size is for competent surfers – it’s more than 5ft so beginners will find it a handful. It’s not expert-only territory though. The direction is west, which works well for Llantwit’s point setup, and the offshore wind makes it worth the wait. Crowds can be an issue here at times, but on a Sunday with a clean outlook, expect company.
After that, Monday the 14th of September morning drops back to 4ft with a light easterly cross-off breeze and clean conditions, but the energy drops to 224. It’s an okay session if you’re keen, but nothing special.
Water temp is running about average for the time of year, so no surprises there. Just your usual autumn wetsuit.
So to sum it up: don’t bother for the first 12 days. Mark your calendar for the afternoon of Saturday the 12th for a clean small wave session, but the real standout is Sunday the 13th of September morning – bigger swell, clean conditions, and proper shape for the point.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sun afternoon. Warm (max 20°C on Sun morning, min 15°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Wed night. Very mild (max 19°C on Wed afternoon, min 15°C on Tue night). Winds increasing (light winds from the WSW on Tue night, strong winds from the W by Fri morning). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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) | WSW 9 | WSW 6 | WSW 8 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | WSW 6 | W 7 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 129 | 57 | 246 | 371 | 369 | 186 | 78 | 74 | 12 | 89 | 279 | 257 | 253 | 260 | 407 | 816 | 569 | 159 | 57 | 184 | 131 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on |
High Tide | 8:47AM9.57m | 9:04PM9.88m | 9:22AM9.64m | 9:39PM9.80m | 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 | |||||||
Low Tide | 2:50PM0.49m | 3:09AM0.42m | 3:20PM0.49m | 3:39AM0.52m | 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 | ||||||||
 | |  |  | |  |  | | | | |  |  | |  | | | | | |  | |
 | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — |
 | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — |
mm | 1 | 7 | 6 | — | — | — | — | — | — | 1 | — | 4 | — | — | 3 | — | — | — | — | — | — |
Temp °C | 20 | 17 | 16 | 16 | 17 | 16 | 17 | 17 | 16 | 18 | 19 | 19 | 19 | 18 | 17 | 17 | 17 | 16 | 15 | 15 | 14 |
Feels °C | 16 | 13 | 12 | 11 | 12 | 14 | 13 | 13 | 14 | 14 | 15 | 14 | 14 | 13 | 13 | 8 | 10 | 10 | 11 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | W 9 | — | — | — | W 10 | W 9 | — | W 5 | — | — | — | — | — | — | — | — | W 8 | W 10 | — | W 7 |
| kJ | 129 | 39 | — | — | — | 186 | 78 | — | 7 | — | — | — | — | — | — | — | — | 159 | 19 | — | 131 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 8 | — | — | — | — | — | — | — | — | — | W 10 | — | — |
| kJ | — | — | — | — | — | — | — | — | 12 | — | — | — | — | — | — | — | — | — | 18 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WSW 6 | WSW 8 | W 10 | W 10 | — | — | W 9 | — | WSW 6 | W 7 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | — | W 7 | W 7 | — |
| kJ | — | 57 | 246 | 371 | 369 | — | — | 74 | — | 89 | 279 | 257 | 253 | 260 | 407 | 816 | 569 | — | 57 | 184 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 321 | 469 | 90 | 83 | 88 | 40 | 40 | 238 | 300 | 401 | 286 | 321 | 134 | 134 | 879 | 616 | 349 | 348 | 88 | 84 | 57 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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