Surf Forecasts:
Llantwit Major surf forecast from 8 Sep 2026:
- Best quality surf: Friday 11 Sep, 10PM (local time) - 2.5ft (0.7m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 4PM (local time) - 4.5ft (1.4m), 9s period, W swell with 320 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 10PM (local time) - 2.5ft (0.7m), 9s period with W 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 (Sep 11) at 10PM. The primary swell is predicted to be 0.7m and 9s period. 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 1.4m 9s and forecast to arrive on Tuesday (Sep 08) 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+) | 10PM (Fri 11th Sep) | 2.5ft (0.7m) 9s |
| Best Surf | 10PM (Fri 11th Sep) | 2.5ft (0.7m) 9s |
| Most Powerful | 4PM (Tue 8th Sep) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Llantwit Major over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's cookin' for the next couple of weeks.
Well, I gotta be straight with you – it's a tough stretch. The guidance points to just one spot, Llantwit Major, and the whole 16-day window is a bit of a bust. We’ve got a long, quiet run of tiny, weak surf and poor conditions that starts now and doesn't really let up. There are no standouts, no days where it all comes together.
Let's break it down. Starting from Tuesday the 8th, there's a bit of energy in the water, with swell around 4 ft to 5 ft from the West, but the wind is just awful. It's cross or cross-onshore and blowing 15 to 22 mph. The surf is messy and lumpy. That water temp is about 67°, which is 6° warmer than usual for early September, so that's very unusual, but you won't care when you're getting blown off your board. Week one is a write-off.
Heading into the second week, from around the 16th onward, the swell drops right off. We're looking at waves mostly under 2 ft from the West for days on end. On the 16th and 17th, the wind does clean up a bit to cross-off, but even then it's just knee-high dribble. For any surfer, this is a frustrating stretch of flat, clean but flat conditions. The consistent easterly wind later on keeps the surface clean, but there's nothing to ride. By the 23rd, we finally see a bit of a long-period pulse at 13 seconds from the West, but it's still only 2 ft. That's a long wait for not much.
Honestly, for Llantwit Major, this setup looks more interesting for a kite surfer than a paddle surfer on the breezy early days. For the rest of us, it's a waiting game.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue morning. Very mild (max 19°C on Thu afternoon, min 13°C on Wed night). Winds decreasing (fresh winds from the WNW on Tue afternoon, light winds from the SW by Wed night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat night. Very mild (max 19°C on Sun morning, min 11°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the WSW by Sat night). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 9 | W 9 | W 6 | W 7 | W 7 | W 8 | W 8 | WSW 5 | WSW 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 9 | W 9 | W 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 180 | 320 | 132 | 106 | 44 | 31 | 18 | 17 | 311 | 139 | 129 | 69 | 49 | 66 | 178 | 155 | 82 | 79 | 40 | 39 | 34 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | on | cross-on | on | cross-on | cross | cross-on | cross-off | on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | on |
High Tide | 5:29PM8.25m | 5:58AM8.41m | 6:21PM9.04m | 6:46AM9.10m | 7:06PM9.68m | 7:28AM9.61m | 7:46PM10.08m | 8:06AM9.89m | 8:24PM10.19m | 8:43AM9.91m | 9:00PM10.03m | 9:18AM9.69m | 9:35PM9.62m | ||||||||
Low Tide | 11:26AM2.22m | 00:02AM1.68m | 12:22PM1.51m | 00:49AM0.99m | 1:05PM0.89m | 1:29AM0.48m | 1:42PM0.46m | 2:04AM0.20m | 2:16PM0.24m | 2:35AM0.16m | 2:47PM0.25m | 3:06AM0.33m | 3:19PM0.47m | 3:36AM0.70m | |||||||
 |  |  |  | | | |  |  | | |  | |  |  | | | | | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:46 | — | — |
 | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — |
mm | 3 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 4 | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 15 | 16 | 14 | 18 | 19 | 17 | 16 | 17 | 13 | 16 | 16 | 17 | 19 | 18 | 16 | 19 | 19 | 18 |
Feels °C | 10 | 8 | 9 | 11 | 12 | 12 | 14 | 14 | 15 | 13 | 13 | 10 | 13 | 11 | 12 | 16 | 15 | 15 | 20 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | — | W 7 | WSW 8 | W 8 | W 8 | W 7 | WSW 9 | W 9 | W 9 | W 8 | W 8 | — | — | — | WSW 9 | W 9 | W 9 | W 9 | W 8 |
| kJ | 180 | — | — | 106 | 24 | 31 | 18 | 4 | 311 | 139 | 129 | 69 | 49 | — | — | — | 29 | 79 | 40 | 39 | 34 |
Swell 2 Height (m) Direction Period (s) | W 10 | — | — | — | — | — | W 12 | W 11 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 55 | — | — | — | — | — | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 9 | W 6 | — | W 7 | — | — | WSW 5 | — | — | W 9 | — | — | W 8 | W 7 | W 7 | W 7 | — | — | — | — |
| kJ | — | 320 | 132 | — | 44 | — | — | 17 | — | — | 78 | — | — | 66 | 178 | 155 | 82 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 885 | 133 | 40 | 127 | 57 | 286 | 223 | 48 | 40 | 58 | 0 | 57 | 349 | 286 | 173 | 355 | 118 | 57 | 191 | 108 |
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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