Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get straight into it. We’ve got a bit of a tough stretch ahead for Trearddur Bay on Holy Island. The next few days are looking pretty grim, with a whole lot of onshore and cross-onshore wind messing up whatever swell is coming in. Water temp is sitting at 62°, which is a touch warmer than normal for this time of year, so at least you won’t be freezing your tail off while you’re getting skunked.

The first few days are a write-off. From the 1st of September right through to the 6th, it’s a mix of fresh breezes and lumpy, poor surf conditions. The swell is all over the shop, mostly short-period stuff around 5 seconds, with weak energy. The wind is just relentless from the south and southwest, keeping it all messy. Thursday the 3rd might have a tiny window with a moderate breeze, but it’s still onshore and the swell is tiny. Don’t bother.

The 7th of September brings a bit of a tease. Monday morning we get a clean, cross-off breeze from the NNW, but the swell is a pathetic 0.7 ft with a weird 14-second period from the WSW. That’s a long-period groundswell, but there’s just no size to work with. It’s a clean, flat dud.

Then it gets properly nasty again. The 8th and 9th see near gale and strong breeze winds, with more rain showers and cross-chop. The swell stays small and weak. On the 10th of September, Thursday afternoon, the swell jumps up to 8 ft from the SSW, with a solid, moderate energy reading. But the wind is onshore from the SW, and the data says “poor surf conditions,” so it’s going to be a big, bumpy, blown-out mess. Way too big for beginners, and only really for experts if they’re desperate for a beating.

Now, things finally start to look up a bit in the second week. The 11th of September, Friday, we get light winds and clean conditions. The swell is small, only about 2 ft, but it’s got a clean 8-second period and a cross-off breeze. It’s a skinnable, small-wave day for the longboard or a foamie. The 13th of September, Sunday afternoon, is the closest thing we have to a standout. We get a clean, moderate offshore wind from the ENE, and the swell is a solid 7 ft from the SSW. That’s a decent, punchy swell with clean conditions. With a period of 7 seconds, it’s windswell, not a groundswell, but the offshore wind will clean it up nicely. Be aware that Trearddur Bay is a fairly exposed spot, and it can get crowded, so keep an eye out for the Sunday crew. This is the best bet for a decent session, but it’s still a marginal call.

The 14th of September, Monday, is another interesting one. The morning is glassy, with a light variable breeze, and a 4 ft swell from the SSW. The afternoon is also glassy, with a 6 ft swell from the SSW. That’s pretty clean, but the data says the waves are “surfable but very ordinary.” It’ll be fun, but not epic.

After that, the 15th and 16th fade back into small, onshore slop. A bit of a disappointing run overall, but if you’re keen, the 13th and 14th are your only real windows. Keep your expectations low.

Rusty.

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