Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Alright, Rusty here. Let’s talk about what’s going on with Trearddur Bay on Holy Island. Honestly, mate, the next couple of weeks are looking pretty grim for a proper surf. There’s a long, long dry spell with nothing worth getting wet for. The first real sniff of anything rideable doesn’t show up until Saturday the 15th, and even then it’s just barely passable. After that, it’s back to flatness or messy junk. It’s a tough stretch.

We start off on Wednesday the 5th of August with some strong westerly winds and a messy, lumpy 5ft swell, but the wind is cross-onshore and strong, so forget about any quality. The water’s 62°, which is a touch warmer than usual for this time of year. The combined swell energy is weak (117). The next several days are just a write-off – tiny waves, wrong wind directions, and poor conditions across the board. Thursday the 6th has a bit of swell in the morning but it’s only 1ft and choppy, and the afternoon goes glassy but flat.

By Friday the 7th, it’s practically a lake – 0.3ft swell with a super long 12-second period, but there’s nothing to ride. The wind is light cross-onshore in the morning, then goes onshore in the afternoon. Saturday the 8th sees a slight bump with a 3ft swell from the SSW, but it’s a short-period 4-second windswell, cross-onshore and choppy. Not worth the paddle.

Sunday the 9th is calm but flat, with a light onshore breeze. Monday the 10th and Tuesday the 11th are more of the same – tiny waves, cross-shore or cross-onshore wind. The combined energy drops to single digits or low teens. This pattern of flat, messy, or just plain small continues all the way through Thursday the 13th, when we get a little lift to 5ft on the afternoon, but it’s still cross-onshore and choppy. The energy is moderate (94).

Now, Saturday the 15th of August is the only day that even comes close to being surfable. In the afternoon, we get a 4ft swell from the SSW, but here’s the catch – the wind switches to a light cross-offshore from the northwest. That’s clean conditions for Trearddur Bay. The combined energy is moderate (87). It’s not a stand-out day by any means, but it’s the best of a bad lot. The swell is from the SSW, which isn’t the optimum SW direction, but with clean wind and a 5-second period, you might find a few lumpy but rideable waves. It’s still small enough for beginners, though the consistency is listed as inconsistent, and crowds are sometimes a factor there. This is your best bet, but don’t expect much.

Sunday the 16th has a similar size (4ft) and clean cross-offshore wind in the morning, but the combined energy is moderate (92). Still, the swell direction is SW with a 6-second period. It’s surfable but very ordinary. After that, we’re back to tiny, choppy, and cross-onshore junk right through to Thursday the 20th, with only 0.3ft to 2ft waves. The 20th has clean cross-offshore wind but only 0.3ft swell, so it’s flat as a pancake.

Bottom line: If you’re desperate, the afternoon of Saturday the 15th is your only real window, but keep expectations low. This stretch is a proper bust for any decent surf.

- Rusty

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