
Surf Forecasts:
Llantwit Major surf forecast from 25 Jul 2026:
- Best quality surf: Friday 31 Jul, 7PM (local time) - 3ft (0.9m), 6s period, WSW swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 4PM (local time) - 4.5ft (1.3m), 7s period, W swell with 157 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 7PM (local time) - 3ft (0.9m), 6s period with WSW swell.
Best Forecast Surf Conditions for Llantwit Major this week:
The surf forecast for Llantwit Major over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 31) at 7PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Llantwit Major in the next 16 days are 1.3m 7s and forecast to arrive on Sunday (Jul 26) at 4PM. 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+) | 7PM (Fri 31st Jul) | 3ft (0.9m) 6s |
| Best Surf | 7PM (Fri 31st Jul) | 3ft (0.9m) 6s |
| Most Powerful | 4PM (Sun 26th Jul) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s coming up for Llantwit Major.
Straight up, I’ve got to be honest with you – the next week and a half is looking pretty grim. We’ve got a long, dry spell ahead with nothing worth paddling out for. From Saturday the 25th of July right through to the 5th of August, the surf is just not there. It's a proper flat spell. The wind is mostly cross-onshore and the swell is tiny, with combined energy barely scraping into double digits at best – a paltry 2 to 157 (weak to moderate energy) most days. You’re looking at knee-high slop or smaller. Not a single standout in that first stretch.
You’ll notice a gap of about 10 days with no real recommendations. That’s a tough run for the area.
Now, the first hint of something happening comes on Wednesday the 5th of August. We’ve got a pulse of swell pushing in, but it comes with some caveats. The morning sees a 6ft swell from the west, with a period of 9 seconds and combined energy hitting 565 (strong energy). The wind is light and onshore from the SSW, though, so it’s not going to be clean. The afternoon improves a bit – the swell builds to 7ft from the west, period stretching to 10 seconds, and energy jumps to 796 (very strong energy). Wind goes light cross-onshore from the WNW. This is solid, powerful groundswell, but at over 6ft, this is for the experienced lads only. Beginners, sit this one out. The cross-onshore wind will keep it a bit lumpy, but there’s some power in the water.
The best of the whole window, if you can call it that, is that Wednesday afternoon. The 7ft west swell with a 10-second period is the most energy we’ll see by a long shot. It’s the only time the combined energy gets into the three-digit range for a proper swell. But don’t expect perfection – the wind is still cross-onshore, so it’ll be a bit of a battle.
After that, it drops right back off. The 6th of August gives us a 3ft west swell, but it’s short-period junk at 8 seconds, and the energy is only 127 (moderate). The wind is light cross-shore, so it’ll be a bit cleaner, but it’s not enough to get excited about.
In a nutshell: the first 10 days are a write-off. The 5th of August has a window of proper, powerful swell for the brave, but it’s not clean. The rest is flat or small and messy. Keep an eye on the forecasts, because it tends not to stay this poor for long.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sat morning, min 14°C on Fri night). Winds increasing (light winds from the NW on Fri night, fresh winds from the W by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue morning, min 16°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 8 | WNW 4 | W 6 | W 7 | W 7 | W 6 | W 7 | W 6 | W 6 | W 6 | W 5 | W 5 | W 6 | W 6 | W 10 | W 8 | WNW 8 | W 7 | W 4 | WSW 5 | WSW 8 |
Wave Graph | |||||||||||||||||||||
1 | 31 | 42 | 107 | 157 | 78 | 56 | 38 | 16 | 10 | 9 | 4 | 3 | 3 | 8 | 5 | 19 | 4 | 3 | 28 | 153 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | off | cross-off | cross-off |
High Tide | 4:16AM6.64m | 4:49PM6.82m | 5:19AM6.90m | 5:45PM7.21m | 6:10AM7.32m | 6:31PM7.70m | 6:52AM7.78m | 7:11PM8.20m | 7:30AM8.21m | 7:47PM8.65m | 8:05AM8.58m | 8:22PM9.02m | 8:39AM8.86m | 8:56PM9.26m | |||||||
Low Tide | 10:15AM3.19m | 10:55PM3.07m | 11:25AM2.94m | 11:59PM2.72m | 12:21PM2.53m | 00:48AM2.27m | 1:05PM2.08m | 1:30AM1.82m | 1:43PM1.66m | 2:06AM1.44m | 2:17PM1.32m | 2:39AM1.15m | 2:49PM1.09m | 3:10AM0.98m | |||||||
5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | |
— | — | 9:13 | — | — | 9:10 | — | — | 9:09 | — | — | 9:07 | — | — | 9:07 | — | — | 9:05 | — | — | 9:04 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 17 | 19 | 20 | 17 | 17 | 18 | 17 | 24 | 24 | 21 | 23 | 23 | 18 | 22 | 22 | 20 | 24 | 30 | 27 |
Feels °C | 14 | 13 | 15 | 12 | 14 | 14 | 13 | 14 | 16 | 24 | 23 | 21 | 20 | 19 | 16 | 20 | 19 | 19 | 21 | 28 | 25 |
Swell 1 Height (m) Direction Period (s) | W 8 | — | W 6 | — | — | W 6 | — | — | W 6 | W 6 | W 5 | W 5 | W 6 | W 6 | W 10 | W 8 | W 10 | W 4 | W 4 | W 9 | — |
1 | — | 42 | — | — | 78 | — | — | 16 | 10 | 9 | 4 | 3 | 3 | 8 | 5 | 2 | 3 | 3 | 2 | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 9 | W 8 | W 8 | W 8 | W 10 | — | W 10 | W 9 | W 7 | W 6 | — | — |
— | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 1 | 2 | — | 2 | 2 | 4 | 1 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 11 | W 11 | W 8 | — | — | — | W 9 | W 9 | — | — |
— | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | — | — | — | 2 | 1 | — | — | |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 4 | — | W 7 | W 7 | — | W 7 | W 6 | — | — | — | — | — | — | W 3 | W 3 | WNW 8 | — | — | WSW 5 | WSW 8 |
1 | 31 | — | 107 | 157 | — | 56 | 38 | — | — | — | — | — | — | 1 | 1 | 19 | — | — | 28 | 153 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 452 | 452 | 473 | 791 | 349 | 39 | 58 | 155 | 95 | 144 | 134 | 143 | 197 | 214 | 197 | 214 | 214 | 194 | 59 | 21 | 21 |
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.










