Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Alright folks, Rusty here, looking at the Trearddur Bay forecast. Honestly, it’s a bit of a tough stretch ahead. For the next week or so, the surf is going to be small and messy, not really worth getting worked up about. The energy is just weak and the wind is mostly going to be blowing the wrong way. It’s one of those periods where the beach will look better for a walk than a paddle. We're looking at low, junky swell and constant onshore or cross-shore winds, leaving the waves lumpy and uninviting.

Let’s start with the here and now. On Thursday morning, there’s a tiny 0.3ft SW swell with a 12-second period, but it's basically flat. The water is a touch warmer than normal for this time of year, sitting at 63°F. You’d be hard-pressed to get a wave. The wind is offshore, but with no swell, it’s a non-event.

We'll see a slight bump in size over the next couple of days, but it's nothing to get excited about. Friday brings in a little more energy but with an onshore wind, it'll be blown out. Saturday has the biggest swell of this first stretch, hitting 5ft, but it's short-period windswell with a strong cross-onshore breeze. Expect lumpy, junky conditions. Even with a combined energy of 155, it’s not clean.

We then sink back into that small, poor-quality range. Sunday and Monday just get messy with moderate to fresh cross-onshore winds and weak swells. Then, the middle of next week looks like it gets properly frustrating. There’s some wind, but virtually no swell. This flat spell drags on through the 3rd of September.

Then, something interesting happens. On Thursday the 3rd, a proper swell shows up, pushing to a solid 10ft with a combined energy of 866. This is real power, but it's coming with a strong cross-onshore wind, and at that size, it will be a roiling, messy beast at Trearddur Bay. This isn't one for the beginners, that's for sure, and the wind will ruin most of it. The swell does back off a little into Friday the 4th, dropping to 6ft, but the morning is still blown out. The afternoon shows a little more promise, with the wind turning cross-offshore and the waves at a more manageable 5ft. This is the one true glimmer in the whole period, a moment where it might actually be surfable, though it’s far from perfect. This is also the only time the forecast isn't just labelled "poor."

After that, it's back to the doldrums. The weekend of the 5th and 6th of September fades back to small, poor surf with strong winds. The 7th looks properly blown out with near-gale conditions. From the 8th onwards, it's small and weak all the way to the end of the window. The swell just fades away into tiny, short-period lines. It’s a clear-cut case of an extended flat spell settling in.

For the whole forecast period, Trearddur Bay (Holy Island) doesn't offer a single standout day. The one moment on the afternoon of the 4th is the only time I’d even consider getting in the water, but even then, you're looking at a pretty ordinary surf. Given the combination of bigger swell and messy winds on the 3rd, it might be a better day to watch the kite surfers than to paddle out yourself.

The setup looks pretty bleak. Hang in there, and keep an eye on that brief window on the 4th. Forecasts can change, but for now, this is what we've got.

Rusty

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