Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Trearddur Bay over the next couple of weeks. Gotta be straight with you – the surf diary is pretty bleak for a long stretch. We’ve got almost two full weeks where you’d struggle to get wet. Let’s break it down.

We kick off from today, the 11th of August, right through to the morning of Sunday the 23rd of August. That’s nearly two weeks of flat or tiny, choppy junk. The water temperature is sitting at 63°, which is a touch warmer than normal for this time of year, so you won’t be freezing your buns off while you’re waiting for a wave that never comes. But that's the only good news. We’re looking at a lot of onshore muck, weak energy readings in the single digits or low double digits, and swell heights barely scraping 2 feet. There are a few moments of clean offshore wind on the 17th of August – Monday – with a fresh NE breeze, but the swell is a pathetic 1 feet. You’d need a stand-up paddleboard, not a surfboard. Basically, forget it until the end of the month.

There’s a big gap of silence and then finally, on the morning of Sunday the 23rd of August, a proper SSW swell swings in at 5 feet with a 7-second period. The energy finally pumps up to 265 – moderate. Problem is, the wind is onshore from the SW, so it’s gonna be messy. Trearddur Bay (Holy Island) is fairly exposed to this direction, and it’s a beginner spot, but that 5 feet mark is right on the edge for beginners. It might be rideable, but it won’t be pretty. The afternoon bumps up to 6 feet (energy 392), but the wind cranks onshore from the S at 22 miles per hour – lumpy as hell.

Now, if you’re an expert and don’t mind a challenge, keep an eye on Monday the 24th of August. We’ve got a 8 feet swell from the SW (energy 890), but it’s hammered by a near-gale cross-onshore wind at 31 miles per hour. That’s blown-out, heavy, and honestly, with that kind of wind and size at a beach setup, it’s looking more like a kite-surfing day than a paddling day. The period is only 9 seconds, so it’s not proper groundswell anyway. Rough.

The very end of the outlook, Wednesday the 26th of August afternoon, finally offers a tiny glimmer. A 2 feet WNW swell with clean conditions and a cross-offshore wind from the NNW. It’s still small, but the energy is weak (24), and you’d be scratching for anything waist-high. At least it’s clean.

So, the only true standout – and I use the term loosely – is the Sunday the 23rd of August morning if you’re a local who just needs to get wet. It’s the biggest push of the whole forecast. But for good, clean waves? There isn’t a single day in this 16-day window that’s worth a drive. Keep the board waxed in the garage and wait for the next weather system.

Rusty.

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