Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Alright folks, Rusty here. Let's be straight with you – it’s looking bleak for the Holy Island coast over the next two and a half weeks. This is one of those stretches where you might want to take up a new hobby. There's a long, long gap with barely a ripple worth mentioning from now all the way into the first week of September.

The only break we’ve got on the cards is Trearddur Bay (Holy Island). The water is sitting at 63°F and the anomaly says it’s a touch warmer than normal for this time of year, which is nice on the skin even if the surf isn't.

Alright, let’s walk through it. From Monday the 24th right through until Wednesday morning the 2nd of September, it’s a write-off. We’re talking nearly ten days of flatness, onshore junk, or mismatched wind. You’ll see tiny 0.3ft slop with a combined energy of just 3, and a lot of cross-off or onshore breezes. There’s a moment on Wednesday afternoon the 26th where the wind goes light and cross, but the swell is only 1.0ft with a short period of 8 seconds and energy of 17. It just doesn’t have the juice. Even a glassy morning on the 27th only offers 0.3ft – frustrating.

Friday the 28th morning does kick up to 4ft from the SSW, but the period is a short 7 seconds and the combined energy climbs to 207 (moderate). Problem is, it’s blowing onshore at 19 mph. That’s messy, not magic.

Now, there is a glimmer. Wednesday afternoon the 2nd of September is the only true standout in this whole outlook. It’s a glassy calm afternoon with a clean 7ft SSW swell, period of 6 seconds, and combined energy of 341 (moderate). But here’s the kicker: that swell size is over 8ft – and at Trearddur Bay, that puts it squarely in the expert zone. It’s going to be big and powerful, and the short period (6 seconds) means it’ll be a bit lumpy and hard to manage. Only for the brave and the skilled.

After that, Thursday the 3rd has a cleaner 5ft NW groundswell with a cross-off breeze, which is a nicer size for stronger intermediates, but the quality drops quickly. Then from Friday the 4th through to the end of the outlook, it’s all cross-shore chop with onshore winds and lumpy conditions. There is a monster pulse on Monday the 7th of September – a 16ft to 18ft SW groundswell with a period of 10 seconds and immense energy (4648 to 5957). That is very strong energy. But the file says it’s predicted to be too big for this break, and the wind is marginal. That’s one for the big wave chargers elsewhere, if it cleans up.

So, bottom line: mark your calendar for Wednesday the 2nd of September if you’re an expert looking for a heavy, glassy challenge. For everyone else, it’s a long wait or a trip elsewhere. The setup through most of the second week looks more interesting for kite surfing than paddle surfing, with strong cross-shore winds and solid swell.

Stay patient.

Rusty.

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