Surf Forecasts:
Llantwit Major surf forecast from 27 Aug 2026:
- Most powerful swell: Sunday 30 Aug, 1AM (local time) - 4.5ft (1.3m), 9s period, W swell with 281 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 9s and forecast to arrive on Sunday (Aug 30) at 1AM. 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 | 1AM (Sun 30th Aug) | 4.5ft (1.3m) 9s |
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 the table for the next couple of weeks.
Truth be told, it's a pretty grim stretch ahead. We're looking at a long, dry spell with hardly anything worth paddling out for. The whole 16-day window is basically a write-off for any decent surf. You'll be waiting over a week for even a glimmer of something rideable, and even then, it's not going to be anything to write home about.
The first recommendation doesn't pop up until the morning of Sunday, September 6th, at Llantwit Major. That's a solid week and a half of flat, blown-out, or just plain messy conditions before we get there. The water temperature on that first mention is a notable 69°F, which is a massive 7°F warmer than usual for this time of year – really quite unusual.
Let's break it down. We start off on Wednesday, August 26th, with tiny 1.0 ft swell from the west, a weak 8-second period, and a cross-shore breeze. The combined energy is a paltry 12. It's just poor. The rest of that week and into the next is a relentless parade of onshore and cross-onshore winds, with the odd bit of rain, keeping the surf small and junky. There's a little bump on Monday, August 31st, with swell around 6 ft, but it's hammered by a fresh 19 mph cross-onshore wind, making for lumpy, horrible conditions. That's a solid 471 in combined energy, but the wind kills it.
The pattern doesn't change. It's all small, onshore slop until we get to that Sunday, September 6th. Finally, the wind swings around to an ESE, giving us a clean, cross-off breeze at just 6 mph. The swell is a modest 4 ft from the west, with an 8-second period and moderate energy at 187. The report says "surfable waves but very ordinary conditions," and that's being generous. For a point break like Llantwit Major, which is fairly exposed to a SW swell, this west swell with a light offshore is about as good as it's going to get in this window. It's clean, but still small. It's the only real standout, and that's a pretty low bar.
After that, it's back to small, onshore junk for the rest of the forecast. The whole period is a wipeout, with only one tiny window of clean, surfable conditions.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Fri morning. Warm (max 20°C on Wed night, min 16°C on Thu night). Winds increasing (light winds from the E on Thu morning, strong winds from the WSW by Sat afternoon). | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Sun night. Warm (max 20°C on Sun morning, min 15°C on Sun night). Winds decreasing (fresh winds from the W on Sat night, light winds from the SSE by Sun night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 7 | W 8 | WSW 4 | WSW 7 | WSW 5 | WSW 6 | WSW 7 | W 9 | W 9 | WSW 9 | W 9 | W 9 | W 10 | W 9 | W 9 | W 9 | W 8 | W 5 | W 6 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 4 | 1 | 11 | 114 | 29 | 72 | 125 | 281 | 207 | 138 | 99 | 94 | 254 | 113 | 97 | 73 | 33 | 12 | 60 | 198 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | on | cross-on | on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on |
High Tide | 7:07AM8.36m | 7:23PM8.89m | 7:40AM8.90m | 7:56PM9.39m | 8:13AM9.32m | 8:29PM9.73m | 8:47AM9.57m | 9:04PM9.88m | 9:22AM9.64m | 9:39PM9.80m | 9:58AM9.49m | 10:17PM9.49m | 10:37AM9.12m | 10:58PM8.97m | |||||||
Low Tide | 1:21PM1.42m | 1:42AM1.12m | 1:52PM0.97m | 2:12AM0.73m | 2:21PM0.65m | 2:40AM0.49m | 2:50PM0.49m | 3:09AM0.42m | 3:20PM0.49m | 3:39AM0.52m | 3:52PM0.66m | 4:12AM0.82m | 4:28PM1.02m | ||||||||
 |  |  |  | |  |  | |  | | | |  | | | | |  | | | | |
 | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — |
mm | 3 | 2 | 1 | 8 | 1 | 5 | 5 | 2 | — | 1 | 4 | 7 | — | — | 2 | 1 | 1 | — | — | — | — |
Temp °C | 20 | 20 | 17 | 17 | 18 | 17 | 19 | 19 | 17 | 20 | 20 | 16 | 18 | 18 | 16 | 18 | 18 | 16 | 16 | 17 | 17 |
Feels °C | 21 | 18 | 16 | 13 | 15 | 15 | 16 | 13 | 11 | 18 | 18 | 15 | 15 | 14 | 13 | 12 | 13 | 14 | 14 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 7 | W 7 | W 8 | — | WSW 7 | — | — | — | W 9 | WSW 9 | W 9 | W 9 | — | W 9 | W 9 | — | W 8 | W 8 | — | — |
| kJ | 4 | 4 | 1 | 1 | — | 5 | — | — | — | 207 | 138 | 99 | 94 | — | 113 | 97 | — | 33 | 11 | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 4 | WSW 7 | WSW 5 | WSW 6 | WSW 7 | W 9 | — | — | — | — | W 10 | — | — | W 9 | — | W 5 | W 6 | W 7 |
| kJ | — | — | — | 11 | 114 | 29 | 72 | 125 | 281 | — | — | — | — | 254 | — | — | 73 | — | 12 | 60 | 198 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 401 | 401 | 191 | 152 | 173 | 286 | 118 | 209 | 300 | 90 | 74 | 127 | 90 | 316 | 300 | 570 | 88 | 286 | 119 | 59 | 300 |
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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