Surf Forecasts:
Llantwit Major surf forecast from 5 Aug 2026:
- Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 4.5ft (1.4m), 7s period, W swell with 178 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 1.4m 7s and forecast to arrive on Wednesday (Aug 05) 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 Wednesday (Aug 12) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Wed 5th Aug) | 4.5ft (1.4m) 7s |
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 cookin' at Llantwit Major for the next couple of weeks.
Honestly, mate, this is a tough one to call. The next two weeks are a real mixed bag, mostly disappointing. The water is a warm 70°, which is much warmer than normal for this time of year – that's a real treat, feels like you’re on a tropical holiday. But the surf? It's a struggle. You're looking at a long, dry spell for most of the period, with a flicker of something big right at the very end that we can’t rely on just yet.
From now through to the 16th of August, it’s pretty much a write-off. We’ve got small, weak swells with the combined wave energy mostly in the doldrums, often barely registering (2-89). The wind is a proper pain, howling from the west most of the time, making a mess of the waves. Even the glassy morning on the 7th of August only had a wave height of 0.7 ft – flat as a pancake. You could stare at it all day and not see a rideable wave. There are a few cleaner mornings on the 12th and 13th of August with a light offshore wind (E), but the swell is still tiny at 1.0 ft to 2 ft. It’s not worth getting wet for.
Then, after that long quiet spell, the 17th of August Monday morning catches the eye. The models are showing a big, solid swell hitting, a 10 ft W swell with a combined energy reading of 1933 (moderate wave energy). That's a proper dose of power for Llantwit Major, but there are big question marks. The wind is a moderate cross-shore breeze, not ideal, and the forecast flags it as a marginal or tricky tide window. At over 8 ft, that size is only for the experts anyway. It’s something to keep an eye on, but for now, it’s a long-range promise that’s got a lot of "ifs" attached to it. Everything after that day goes straight back to small and choppy.
So, in short, there’s no standout session in this forecast. If you’re desperate for a surf, the cleanest options are the small dawny window on the 12th of August or the 13th of August with a cross-offshore wind, but you’ll be on a longboard or a foamie hunting for knee-high lumps. The one to maybe mark on your calendar is the 17th of August with that big swell, but hold your breath until we get closer – the forecast could change everything.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Wed night). Winds decreasing (fresh winds from the W on Wed afternoon, calm by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 13°C on Mon night). Winds increasing (calm on Sat morning, fresh winds from the W by Mon afternoon). | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 6 | W 7 | W 6 | W 6 | W 6 | W 5 | W 9 | W 5 | W 9 | W 9 | W 9 | WSW 8 | W 7 | W 4 | W 5 | W 6 | W 6 | W 5 | W 7 | W 7 | W 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 59 | 178 | 59 | 62 | 35 | 8 | 7 | 2 | 2 | 2 | 6 | 13 | 14 | 13 | 18 | 48 | 23 | 9 | 9 | 8 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | glassy | cross-on | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | on | off |
High Tide | 11:47AM8.34m | 00:10AM8.28m | 12:38PM7.88m | 1:08AM7.76m | 1:44PM7.46m | 2:23AM7.38m | 3:06PM7.31m | 3:49AM7.39m | 4:28PM7.62m | 5:05AM7.83m | 5:37PM8.28m | 6:07AM8.48m | 6:33PM9.03m | ||||||||
Low Tide | 5:39PM1.67m | 6:07AM1.83m | 6:32PM2.09m | 7:06AM2.27m | 7:40PM2.47m | 8:22AM2.60m | 9:07PM2.63m | 9:54AM2.59m | 10:43PM2.36m | 11:21AM2.18m | 00:00AM1.76m | 12:27PM1.56m | 00:59AM1.09m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 5:43 | — | — | 5:43 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — |
 | — | 8:54 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 16 | 16 | 16 | 15 | 17 | 17 | 16 | 20 | 21 | 18 | 22 | 22 | 17 | 20 | 20 | 17 | 20 | 24 | 22 |
Feels °C | 11 | 10 | 11 | 10 | 10 | 12 | 14 | 13 | 14 | 18 | 16 | 15 | 18 | 17 | 14 | 15 | 15 | 15 | 17 | 22 | 20 |
Swell 1 Height (m) Direction Period (s) | — | — | W 11 | W 10 | W 10 | W 5 | W 5 | W 5 | W 4 | W 9 | W 9 | WSW 8 | W 9 | — | W 8 | W 6 | W 8 | W 5 | W 7 | W 7 | W 6 |
| kJ | — | — | 2 | 2 | 2 | 8 | 2 | 2 | 1 | 2 | 6 | 13 | 2 | — | 1 | 48 | 1 | 9 | 9 | 8 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 10 | W 9 | W 9 | W 9 | — | — | — | — | — | — | — | — | W 8 | W 10 | W 10 | W 7 |
| kJ | — | — | — | — | — | 7 | 7 | 2 | 2 | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | W 6 | W 7 | W 6 | W 6 | W 6 | — | — | — | — | — | — | — | W 7 | W 4 | W 5 | — | W 6 | — | — | — | — |
| kJ | 59 | 178 | 59 | 62 | 35 | — | — | — | — | — | — | — | 14 | 13 | 18 | — | 23 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 404 | 645 | 349 | 39 | 481 | 333 | 336 | 359 | 359 | 211 | 196 | 51 | 196 | 214 | 46 | 348 | 214 | 196 | 339 | 460 | 196 |
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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