Surf Forecasts:
Llantwit Major surf forecast from 31 Aug 2026:
- Most powerful swell: Monday 31 Aug, 1PM (local time) - 5ft (1.5m), 10s period, W swell with 432 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 1.5m 10s and forecast to arrive on Monday (Aug 31) 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 31st Aug) | 5ft (1.5m) 10s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for the Llantwit Major stretch. I’m Rusty, and I’ll be straight with you – this 16-day window is a tough one for the paddle crew. The whole period is a real mixed bag of messy onshores and small, weak swells, with no real standouts to get excited about.
We’re kicking off on Monday, 31st August, but don’t bother paddling out. There’s a 5ft swell from the west, but it’s coming with a strong 16 mph cross-onshore wind, making it a choppy, blown-out mess. The combined wave energy is moderate (398), but the quality is just poor. That trend continues through Tuesday and Wednesday – tiny waves and onshore winds keep the scores at zero. On Wednesday afternoon, the wind picks up to 22 mph, and the swell jumps to 5ft, but with a short period of 7 seconds, it’s just lumpy and poor for surfing. That’s more of a kite-surfing setup, if you’re into that.
The rest of the first week is more of the same. Thursday, Friday, and Saturday all have cross-onshore winds and weak, short-period swell. By Friday afternoon, winds are hitting 25 mph, making it a strong, messy session – definitely not for the log or shortboard. Saturday morning (5th September) sees a slight break with a lighter 9 mph cross-shore, but the swell has dropped to 4ft and it’s only 7 seconds, so it’s barely worth a look. The combined energy is weak (110).
Now, we hit a real lull from Sunday, 6th September, right through to the end of the forecast on Tuesday, 15th September. The swell drops to tiny 0.7ft to 1ft, and the wave energy is in the single digits or low tens (13 to 7). The wind does turn more favourable – light to moderate easterly cross-offshore breezes keep the surface clean, but there’s simply no swell to ride. It’s a flat spell that lasts for over a week, so if you’re hanging for a wave, you’ll be waiting a long time. The water temperature is about average for the time of year, nothing unusual.
So, to be honest, there are no good surf options in this 16-day window. The guidance suggests Llantwit Major is a fairly consistent point break, but this forecast is a blank run. It’s one of those periods where the area just goes quiet. Forecasts can change, but for now, the only thing on offer is a clean, flat ocean. Get the surfskate out or fix your dings, because the waves have taken a holiday.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sun night. Warm (max 20°C on Wed afternoon, min 15°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu night. Warm (max 21°C on Thu afternoon, min 13°C on Fri night). Winds decreasing (strong winds from the SW on Thu night, light winds from the W by Sat afternoon). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 10 | W 10 | W 10 | W 9 | W 9 | W 5 | WSW 6 | W 7 | W 8 | W 8 | W 8 | W 7 | W 7 | W 6 | W 7 | W 7 | W 6 | W 7 | W 9 | W 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 398 | 424 | 186 | 78 | 74 | 12 | 66 | 215 | 153 | 142 | 173 | 128 | 121 | 181 | 162 | 110 | 63 | 25 | 27 | 7 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | glassy | cross | cross-on | glassy |
High Tide | 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 | 2:54PM7.08m | 3:43AM7.09m | |||||||
Low Tide | 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 | 8:10AM2.98m | 9:14PM2.89m | ||||||||
 | |  |  | |  |  | |  | | |  | | |  | | | | | | | |
 | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — |
 | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — |
mm | — | — | — | — | — | — | 2 | — | 1 | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 18 | 18 | 16 | 18 | 20 | 18 | 20 | 21 | 20 | 17 | 17 | 16 | 15 | 16 | 15 | 18 | 21 | 16 |
Feels °C | 12 | 11 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 15 | 11 | 10 | 10 | 11 | 12 | 13 | 17 | 18 | 14 |
Swell 1 Height (m) Direction Period (s) | — | — | W 10 | W 9 | — | W 5 | W 6 | — | W 8 | — | — | W 7 | — | — | — | — | W 10 | W 7 | W 9 | W 6 | W 8 |
| kJ | — | — | 186 | 78 | — | 12 | 26 | — | 153 | — | — | 128 | — | — | — | — | 19 | 25 | 27 | 7 | 21 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 8 | — | — | — | — | — | W 15 | — | — | — | — | — | W 10 | W 9 | W 9 | W 18 |
| kJ | — | — | — | — | — | 12 | — | — | — | — | — | 5 | — | — | — | — | — | 17 | 7 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 10 | W 10 | — | — | W 9 | — | WSW 6 | W 7 | — | W 8 | W 8 | — | W 7 | W 6 | W 7 | W 7 | W 6 | — | — | — | — |
| kJ | 398 | 424 | — | — | 74 | — | 66 | 215 | — | 142 | 173 | — | 121 | 181 | 162 | 110 | 63 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 349 | 48 | 74 | 118 | 238 | 108 | 401 | 300 | 191 | 142 | 300 | 349 | 300 | 300 | 133 | 127 | 101 | 39 | 55 | 51 | 134 |
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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