Surf Forecasts:
Llantwit Major surf forecast from 23 Aug 2026:
- Most powerful swell: Saturday 29 Aug, 10AM (local time) - 4.5ft (1.3m), 7s period, W swell with 177 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 1.3m 7s and forecast to arrive on Saturday (Aug 29) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Aug 24) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Sat 29th Aug) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Alright, let’s size this up in feet and Fahrenheit for the same window.
Look, it’s a grim run for Llantwit Major. Nothing worth paddling out for ages. We’re talking days of tiny, gutless dribble with the wind doing you no favours. It’s straight-up flat or rubbish for the vast majority of the time.
The only half-decent chance doesn’t show until early September. On the morning of Sunday the 6th, we finally see some swell push in, around 6ft from the west. The wind goes offshore from the NE, which means clean faces. The combined energy sits at 437, so there’s some punch, but it’s a short 8-second period, so it’ll be a bit lumpy and less organised. At over 6ft, this is for experienced surfers only. Beginners shouldn’t even think about it. The afternoon turns messy with a light cross-on, so the morning session is the only window.
The standout, if you can call it that, is that Sunday morning session on the 6th. It’s the only time the stars sort-of align. Before that, even the moderate bump around the 29th of August (about 4ft) gets trashed by fresh onshores.
We also see a spike on Saturday the 5th of September, with 5ft to 6ft possible, but the wind is straight onshore, making it a total write-off.
In short, it’s a long dry spell with one fleeting chance on that Sunday morning. Be there if you can, but otherwise, don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Tue afternoon, min 13°C on Sun night). Winds increasing (calm on Sun afternoon, fresh winds from the ENE by Mon night). | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Wed night. Warm (max 24°C on Wed afternoon, min 14°C on Fri night). Winds increasing (light winds from the SE on Wed night, fresh winds from the W by Sat morning). | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 8 | W 9 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 8 | W 8 | W 7 | WSW 7 | W 9 | WSW 7 | W 7 | W 7 | W 7 | W 7 | W 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 7 | 14 | 12 | 10 | 10 | 9 | 38 | 18 | 14 | 68 | 177 | 153 | 58 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 4:21PM6.41m | 4:58AM6.53m | 5:25PM6.95m | 5:50AM7.11m | 6:11PM7.61m | 6:31AM7.75m | 6:49PM8.28m | 7:07AM8.36m | 7:23PM8.89m | 7:40AM8.90m | 7:56PM9.39m | 8:13AM9.32m | 8:29PM9.73m | |||||||
Low Tide | 10:37PM3.38m | 11:10AM3.19m | 11:46PM2.85m | 12:06PM2.60m | 00:32AM2.23m | 12:46PM1.98m | 1:09AM1.63m | 1:21PM1.42m | 1:42AM1.12m | 1:52PM0.97m | 2:12AM0.73m | 2:21PM0.65m | 2:40AM0.49m | |||||||
 |  | | |  |  |  | | | |  | | | | | | | | | | |
 | — | — | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — |
 | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | 12 | — | — | — | — | — | — | — | — | 1 |
Temp °C | 23 | 19 | 21 | 24 | 19 | 23 | 25 | 19 | 22 | 24 | 18 | 20 | 22 | 17 | 19 | 19 | 17 | 18 | 18 | 16 |
Feels °C | 21 | 17 | 14 | 18 | 14 | 19 | 22 | 18 | 21 | 22 | 17 | 19 | 20 | 15 | 15 | 14 | 12 | 12 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 9 | W 10 | W 9 | W 9 | W 8 | E 3 | W 10 | W 9 | W 8 | W 8 | W 7 | WSW 7 | W 9 | WSW 7 | W 7 | — | — | — | W 7 |
| kJ | 6 | 2 | 2 | 2 | 2 | 1 | 1 | 7 | 14 | 12 | 10 | 10 | 9 | 38 | 18 | 14 | — | — | — | 58 |
Swell 2 Height (m) Direction Period (s) | W 14 | W 8 | — | — | — | W 11 | W 8 | — | — | — | — | — | WSW 9 | W 11 | W 9 | W 8 | — | — | — | — |
| kJ | 4 | 1 | — | — | — | 2 | 1 | — | — | — | — | — | 7 | 2 | 2 | 12 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 10 | — | — | — | — | — | — | — | W 9 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | 2 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | E 3 | E 3 | E 3 | ENE 3 | — | — | — | — | — | — | — | — | — | — | W 7 | W 7 | W 7 | — |
| kJ | — | — | 2 | 8 | 8 | 9 | — | — | — | — | — | — | — | — | — | — | 68 | 177 | 153 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 134 | 94 | 434 | 300 | 286 | 143 | 300 | 59 | 59 | 94 | 301 | 60 | 9 | 15 | 127 | 134 | 48 | 355 | 286 | 84 |
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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