Surf Forecasts:
Llantwit Major surf forecast from 6 Sep 2026:
- Most powerful swell: Monday 7 Sep, 1PM (local time) - 4ft (1.2m), 13s period, W swell with 498 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 1.2m 13s and forecast to arrive on Monday (Sep 07) at 1PM. 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 | 1PM (Mon 7th Sep) | 4ft (1.2m) 13s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on offer for the next couple of weeks.
Honestly, mate, it's a grim stretch ahead. The whole 16-day window is a write-off for any decent surf. There's just nothing coming together. We've got a long gap of poor conditions starting from now, and it doesn't let up. The first real sniff of anything surfable doesn't come until the morning of the 16th of September, and even then it's barely worth a mention.
For Llantwit Major, the story is all about messy wind and weak swell. The combined wave energy is low, mostly in the double digits and low triple digits, meaning there's just no power in the water. For example, Sunday morning the 6th has a combined energy of only 14, with a tiny 1 ft swell from the west. The wind is a cross-shore, but it's still resulting in a cross-chop that makes it look hopeless.
The only break in the monotony comes on the morning of Wednesday the 16th of September. The wind goes light and cross-offshore from the ESE, and the conditions are described as clean. The swell is still tiny, only about 3 ft from the west, but the combined energy is a weak 82. It's surfable, but it's very ordinary. That's the best we've got, and it's not saying much.
Every other day, it's a constant battle of onshore and cross-onshore winds from the west and southwest, with the rare clean window being too small or too weak to care about. The water temp is about average for the time of year, nothing unusual to report there.
So there you have it. Nothing to get excited about. It's a blank run, which is more normal for the area than a surprise. Forecasts can change, but for now, I'd leave the board in the shed.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Warm (max 25°C on Sun afternoon, min 14°C on Mon night). Winds increasing (calm on Sat night, fresh winds from the W by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 19°C on Fri morning, min 14°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 7 | W 6 | W 8 | W 14 | W 13 | W 12 | W 7 | W 7 | W 6 | W 7 | W 7 | W 6 | W 6 | W 6 | W 8 | W 9 | W 9 | W 8 | W 8 | WSW 8 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 22 | 31 | 487 | 483 | 330 | 260 | 198 | 136 | 147 | 114 | 38 | 18 | 68 | 133 | 106 | 76 | 49 | 30 | 19 | 152 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | cross | cross-on | on | cross | cross-on | cross | cross | cross-on | on | on | on | on | cross-on | cross-on | cross-off | cross-on | cross-on | on |
High Tide | 2:54PM7.08m | 3:43AM7.09m | 4:22PM7.49m | 5:00AM7.66m | 5:29PM8.25m | 5:58AM8.41m | 6:21PM9.04m | 6:46AM9.10m | 7:06PM9.68m | 7:28AM9.61m | 7:46PM10.08m | 8:06AM9.89m | 8:24PM10.19m | ||||||||
Low Tide | 8:10AM2.98m | 9:14PM2.89m | 10:04AM2.84m | 10:56PM2.41m | 11:26AM2.22m | 00:02AM1.68m | 12:22PM1.51m | 00:49AM0.99m | 1:05PM0.89m | 1:29AM0.48m | 1:42PM0.46m | 2:04AM0.20m | 2:16PM0.24m | 2:35AM0.16m | |||||||
 | |  | |  |  |  |  | | | |  |  | |  | | |  | | |  | |
 | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — |
 | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — |
mm | — | — | — | — | — | 6 | 1 | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | 3 |
Temp °C | 23 | 25 | 18 | 17 | 17 | 16 | 16 | 16 | 14 | 16 | 16 | 15 | 17 | 18 | 17 | 19 | 19 | 17 | 18 | 19 | 18 |
Feels °C | 20 | 21 | 17 | 14 | 12 | 11 | 10 | 9 | 9 | 10 | 10 | 11 | 14 | 15 | 14 | 17 | 16 | 16 | 16 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 6 | W 8 | W 14 | — | W 12 | WSW 11 | — | — | — | — | W 6 | W 6 | W 6 | W 8 | W 9 | W 9 | W 8 | W 8 | WSW 8 | — |
| kJ | 8 | 22 | 31 | 487 | — | 330 | 39 | — | — | — | — | 38 | 18 | 68 | 133 | 106 | 76 | 49 | 30 | 19 | — |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | W 17 | — | — | — | — | — | — | — | — | W 8 | W 8 | W 11 | — | — | — | — | — | — | — |
| kJ | 6 | 6 | 24 | — | — | — | — | — | — | — | — | 12 | 10 | 2 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 2 | — | W 11 | W 13 | — | W 7 | W 7 | W 6 | W 7 | W 7 | — | — | — | — | — | — | — | — | — | W 7 |
| kJ | — | 1 | — | 166 | 483 | — | 260 | 198 | 136 | 147 | 114 | — | — | — | — | — | — | — | — | — | 152 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 223 | 223 | 129 | 48 | 134 | 134 | 84 | 187 | 133 | 133 | 286 | 134 | 142 | 286 | 142 | 39 | 84 | 21 | 57 | 142 | 155 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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