Llantwit Major Surf Forecast and Surf Report

Alright, let’s get real about Llantwit Major for the next couple of weeks.

Honestly, friend, this is a tough stretch. The whole 16-day window is lacking any solid surf. There’s no standout session, no clean, punchy swell. It’s a real dry spell for the region. The energy is scrappy and the wind is almost always a problem. For a spot that’s fairly exposed to the southwest, we’re just not getting the right combination of conditions to line up.

The first week is a write-off. Starting Friday, the 4th of September, we’ve got a lumpy 5ft swell from the west, but it’s being torn apart by a fresh 22 mph cross-onshore wind. The wave energy is a weak 339, and it’s just poor. That pattern sticks around through the weekend and into the start of the next week. The wind is constantly cross or cross-on, keeping the surface messy. By Monday the 7th, there’s a bit more energy in the water with a 4ft west swell and a long period of 13 seconds, giving a combined energy of 654, which is moderate. But again, the cross-onshore wind spoils it. That long period makes it more of a groundswell, which would be better if the wind was off, but it’s not. It’s frustrating.

The middle of the week doesn’t get any better. Tuesday the 8th offers a 6ft west swell, but the fresh cross-onshore wind and lumpy conditions make it a mess. That’s too big for beginners with the wind on it, and not clean enough for anyone else. The water temperature is about average for the time of year, nothing special to note.

We finally get a window of clean conditions on Saturday the 12th of September. The wind turns light and cross-off from the north, but the swell is tiny, just 2ft from the west. The energy is weak at 53. Sunday the 13th is similar: clean but flat with a 1ft swell. These are the only clean moments in the entire forecast, but there’s just no wave height to work with.

The second week is more of the same. There’s a pulse of swell on Monday the 14th with a 7ft west swell and a combined energy of 442, which is moderate. But the wind is cross-on, and at that size, it’s messy and only for the hardcore. The period is short, too, at 8 seconds, so it’s not a quality groundswell. After that, it fades back to tiny, unsurfable waves.

The final few days, from the 17th through the 19th, are flat and clean but offer nothing in the way of surf. On Friday the 18th, we get glassy conditions with a 2ft west swell, which is about as calm as it gets, but there’s just no rideable wave.

So, here’s the bottom line: there are no good surf options in this 16-day window. The swell is either too small, too wind-affected, or both. The few clean windows have zero wave height. For an area like this, a blank run isn’t uncommon, but it still stings.

Rusty.

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