Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Right then, let’s have a look at what’s on offer for Trearddur Bay (Holy Island). I’ll be straight with you, it’s a tough read for the next couple of weeks. The swell is small and the wind is all over the place, so we’re looking at a long stretch of pretty ordinary conditions. There’s not a single session that’s worth paddling out for—every single one in the 16-day window is rated as poor surf. That’s a big gap with no real recommendations, and for this area, a blank run like this is more normal when the patterns aren’t lining up.

Over the first few days, into the end of August and the start of September, we’re dealing with tiny swell—mostly around 1 ft to 4 ft—but the wind is a problem. Friday the 28th has a bit of cross-shore breeze but only 1 ft from the SSW with a short 6-second period, and the combined wave energy is weak at just 19. Saturday the 29th morning shows a slightly better 3 ft with a cross-offshore wind, which is clean, but the swell is still small and gutless. The energy is still low at 67. By Saturday afternoon, the onshore wind kicks in at 16 mph and the swell jumps to 4 ft, but it’s blown out and messy.

Moving into Sunday and Monday, it gets worse. Sunday has strong onshore winds up to 25 mph with a short 5-second period, and Monday has a 5 ft WNW swell but with a fresh cross-shore wind that brings lumpy cross-chop. The energy on Monday morning is moderate at 223, but the quality is still poor.

Later in the week, things actually get bigger, but it’s no good for surfing. On Wednesday the 9th of September, we see a big jump to 12 ft from the SSW with a 7-second period, and the combined energy is a massive 1152—that’s very strong. But the wind is howling from the south at 28 mph, making it a strong cross-onshore mess. That kind of setup, with big, short-period swell and strong wind blowing across the beach break, is more interesting for kite surfing than for paddle surfing. It’s way too big for beginners at over 8 ft, and even for experts, the wind and chop will make it ugly. It blows out completely on the Wednesday afternoon with near-gale winds at 34 mph and energy at 1341.

The second week trails off into tiny, weak swell again, with the odd clean session on the 7th and 8th of September—3 ft with cross-offshore winds—but the period is short at 4 seconds and the energy is low at 34 and 31. Not worth the rubber.

We’ve got no standout sessions. The water temperature anomaly isn’t given, but it’s not mentioned, so I’ll say it’s about average for the time of year. Trearddur Bay itself is a fairly exposed spot, and it’s inconsistent, so when it’s off, it’s really off.

Keep an eye on the charts, but for now, I’d save the wax for another time.

Rusty

Read more