Trearddur Bay (Holy Island) Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s talk about what’s happening at Trearddur Bay (Holy Island). I’ve got to be straight with you – this outlook is a tough one. The whole 16-day window is a write-off for decent surf. There are no good options on the cards, not a single session that’s worth paddling out for. It’s rare to see a blank run like this, but when the wind and swell just won’t line up, that’s the way it goes.

We start off on Tuesday, 1st September and it’s already a mess. Swell is tiny at 3 ft from the SW with a short, weak period of 4 seconds, and the wind is howling onshore at 16 mph. Combined energy is a pathetic 21 – barely a ripple. It’s poor, and it stays poor. Wednesday the 2nd sees a bump in height to 6 ft, but with a fresh cross-shore wind at 19 mph, it’s lumpy, choppy, and ugly. The energy climbs to 173 (moderate), but the quality is just not there.

The whole first week is a blur of onshore and cross-onshore winds, with swell heights bouncing between 1 ft and 5 ft. Thursday the 3rd, Friday the 4th, Saturday the 5th – all poor. On Sunday the 6th, we get a bit of push with 5 ft from the SSW and 160 energy, but a fresh cross-onshore wind at 22 mph ruins it. Nothing to get excited about.

Then things get weird. On Monday the 7th, the swell drops right back to 2 ft and 3 ft with light winds, but it’s still too small and weak. Then Tuesday the 8th brings a sudden spike – 8 ft from the WSW with a near gale force wind of 31 mph. The energy jumps to 418 (strong), but that’s a full-on stormy mess. That’s expert-only, big and blown out. For the average surfer, it’s a kite day, not a paddle day.

After that, the wind stays strong and cross-onshore through Wednesday the 9th, with 4 ft from the NW and 120 energy, but it’s messy. Thursday the 10th and Friday the 11th finally see clean, glassy conditions with light offshore or cross-offshore breezes, but the swell is gone – just 2 ft and 0.3 ft. The combined energy is 18 or less. It’s pretty, but there’s nothing to ride.

Saturday the 12th is the same story: glassy conditions, but only 0.7 ft of swell. You’d be floating. Sunday the 13th brings a bump to 6 ft from the SSW with 194 energy, but it’s cross-shore and messy. By Monday the 14th, we finally get a bit of hope: a glassy calm morning with 4 ft from the WSW, clean conditions, and a combined energy of 66. The forecast says “surfable waves but very ordinary conditions” – that’s the best we get, and it’s a 1 out of 10. It’s not good, but it’s the only thing that’s even surfable.

The last two days, Tuesday the 15th and Wednesday the 16th, are back to poor – cross-onshore winds, lumpy, choppy. No standouts, no hidden gems. If you’re desperate, Monday the 14th morning is your only shot, but keep expectations low.

Look, the water temperature is 62°F with a 1°F anomaly, so a touch warmer than normal for this time of year, but that’s about the only positive here. The waves just aren’t cooperating. Stay patient – forecasts can change, and it won’t stay this poor forever.

Rusty.

Read more