Surf Forecasts:
Llantwit Major surf forecast from 18 Jul 2026:
- Most powerful swell: Saturday 25 Jul, 4PM (local time) - 4.5ft (1.3m), 7s period, WNW swell with 161 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 (Jul 25) 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 0.2m 2s period and expected on Sunday (Jul 19) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 25th Jul) | 4.5ft (1.3m) 7s |
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 over the next couple of weeks.
Honestly, it’s a pretty bleak picture for Llantwit Major. We’re looking at a solid stretch of small, weak swell and messy onshore winds, so don’t expect much to ride for a while. The water is a very unusual 68°F, which is much warmer than normal for this time of year – feels more like the Med than the Bristol Channel, but that’s about the only nice thing I can say.
The first few days are a write-off. From Saturday 18th July right through to Thursday 23rd July, we’ve got tiny waves, barely 0.3ft to 0.7ft, with periods so short they’ve got no push. The only bright spot is Thursday morning 23rd July, when a glassy, light SE wind (5 km/h) will clean up the surface, but there’s no decent swell to take advantage of.
Then it gets a bit more interesting on Saturday 25th July. The swell bumps up to 4ft from the W, with a longer period of 7 seconds, and the combined wave energy hits 157 – that’s moderate energy, finally something to work with. But the wind is a cross-shore at 12 mph in the morning, turning into a full cross-on at 22 mph by the afternoon. It’s going to be lumpy and messy, not clean. Still, for a bigger wave, you’d want to be an experienced surfer because 4ft can be a handful on a beach break, and the onshore wind will chop it up. This is your only real chance for a wave, but it’s not pretty.
From Sunday 26th July onward, it’s back to small, weak swell (2ft to 3ft) with cross-on winds from the W or WNW, mostly in the moderate to fresh breeze range. The energy stays low, between 19 and 58. There’s a brief window on Thursday 30th July morning, with glassy conditions and a NE wind at 5 km/h, but the swell is a pathetic 0.7ft. Then Friday 31st July and into the first week of August, we get some offshore and cross-off winds from the E and ENE, but the waves are tiny, barely 0.3ft to 0.7ft. The energy is laughable, single digits (2 to 6). It’s clean, but you’ll be floating, not surfing.
The best of a bad bunch is definitely Saturday 25th July, with that 4ft swell. But be honest, with the wind howling onshore, it’s going to be a battle. If you’re a beginner, stay out of the water on that day – it’s too big. For everyone else, it’s a choice between no surf or poor surf.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 13°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Wed afternoon, min 15°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the NNW by Wed afternoon). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 | W 8 | WNW 4 | W 8 | W 7 | W 7 | W 12 | W 11 | NW 4 | W 11 | W 10 | W 10 | W 10 | W 9 | WNW 5 | W 9 | W 9 | W 8 | W 8 | W 3 | W 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 8 | 1 | 1 | 1 | 3 | 2 | 5 | 2 | 2 | 8 | 7 | 7 | 15 | 2 | 1 | 1 | 1 | 7 | 13 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | off | cross-off | cross-on | glassy | cross-on | cross | off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:16AM9.34m | 10:37PM9.54m | 11:00AM8.88m | 11:20PM8.96m | 11:44AM8.32m | 00:05AM8.28m | 12:30PM7.73m | 00:54AM7.60m | 1:22PM7.18m | 1:51AM7.01m | 2:25PM6.77m | 3:01AM6.66m | 3:39PM6.64m | ||||||||
Low Tide | 4:25PM0.78m | 4:53AM0.86m | 5:06PM1.17m | 5:34AM1.34m | 5:48PM1.67m | 6:16AM1.89m | 6:34PM2.20m | 7:02AM2.43m | 7:25PM2.69m | 7:55AM2.88m | 8:26PM3.06m | 9:00AM3.16m | 9:39PM3.21m | ||||||||
 | |  |  | | | | |  | | | | | | | | | | | | | |
 | 5:16 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — |
 | — | — | 9:21 | — | — | 9:20 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 | — | — | 9:15 | — | — | 9:14 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 21 | 20 | 21 | 20 | 21 | 22 | 20 | 23 | 23 | 22 | 22 | 24 | 20 | 21 | 23 | 19 | 20 | 19 | 17 |
Feels °C | 19 | 19 | 16 | 17 | 18 | 17 | 18 | 19 | 18 | 21 | 20 | 20 | 18 | 19 | 18 | 20 | 20 | 17 | 16 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 3 | W 8 | WNW 4 | NW 4 | W 7 | W 7 | — | W 8 | NW 4 | NW 4 | W 10 | WNW 3 | W 10 | W 9 | WNW 5 | WNW 4 | W 9 | W 8 | W 8 | — | W 8 |
| kJ | 1 | 1 | 8 | 1 | 1 | 1 | — | 1 | 5 | 1 | 2 | 1 | 7 | 7 | 15 | 2 | 1 | 1 | 1 | — | 1 |
Swell 2 Height (m) Direction Period (s) | W 8 | NW 4 | W 8 | W 8 | — | — | W 9 | — | W 11 | W 11 | W 8 | W 10 | W 10 | — | W 9 | W 9 | — | W 8 | — | — | — |
| kJ | 1 | 1 | 1 | 1 | — | — | 2 | — | 2 | 2 | 1 | 8 | 2 | — | 2 | 2 | — | 1 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 12 | W 11 | W 8 | W 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 3 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNW 3 | — | — | — | — | — | — | WNW 4 | NW 4 | — | — | — | WNW 3 | WNW 3 | W 3 | W 4 |
| kJ | — | — | — | — | — | 1 | — | — | — | — | — | — | 2 | 4 | — | — | — | 1 | 1 | 7 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 426 | 426 | 59 | 426 | 381 | 333 | 211 | 211 | 356 | 143 | 196 | 214 | 441 | 771 | 214 | 94 | 410 | 331 | 367 | 950 | 355 |
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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