Annascaul Rivermouth Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what’s cookin’ at Annascaul Rivermouth over the next couple of weeks. Gotta be straight with ya – the start is a proper struggle.

We're looking at Annascaul Rivermouth (Ireland). The water temp is sittin' at 64°, which is a touch warmer than normal for this time of year, so that’s a little extra comfort while you’re waiting for the waves to show up.

The Overall Pattern

Right now, and for the next several days, the surf is basically a no-show. From the 25th of August right through to the 31st, the swell is tiny and the wind is just not playing ball. We see a few clean moments – like the glassy conditions on the morning of the 28th – but with barely a ripple of swell, it's a flat spell, plain and simple.

Between the 25th and the 31st, there's a big gap of near-flat conditions with no real recommendations. Do not get your hopes up for the end of August. The energy in the water is weak, with combined swell energy values barely scratching triple digits until the 29th, and even then, it’s only 54 to 195.

Tuesday, 1st September into the first week

The first real sign of life arrives on the 1st of September. The swell starts to build, but the wind turns messy. By Tuesday afternoon, we're lookin' at 8 ft of swell from the west, but it’s gettin' hammered by a fresh cross-onshore wind at 19 mph. That combined swell energy is a solid 1063, but the quality is poor. For a beach and reef setup like this, the conditions are more interesting for kite surfing than paddle surfing – too lumpy and choppy for a clean wave.

Thursday, 3rd September – A Big Un' But Sloppy

The swell peaks on Thursday the 3rd with 13 ft of west swell arriving. The energy is massive – over 4000 – and the period is a long 12 seconds, so there’s some serious groundswell power. But it's still onshore. The morning is a write-off, and by the afternoon it's only marginal at best. This is big, powerful, and dirty. Only for the experts if you're brave enough.

Friday, 4th September – The Standout

Finally, a window. Friday the 4th is where the magic is. The morning brings 10 ft of west swell with a long period of 11 seconds. The wind switches to a light north-northwest breeze, making it cross-offshore and clean. The combined swell energy sits at 1883, so there’s plenty of push. This is a proper groundswell with that longer period, which can be a bit straight at beach breaks, but at a rivermouth like Annascaul, it can line up real nice. This is the standout of the forecast. The afternoon is still good at 7 ft and clean, but the morning is the pick.

The Second Week – Diminishing Returns

After that Friday high, things taper off fast. The weekend of the 5th and 6th sees the swell back down to 5 ft to 7 ft, but the wind is back onshore or cross-shore, turning it messy again.

From the 7th of September onward, we see another pulse of bigger swell – 12 ft and 8 ft – but it’s all accompanied by strong, onshore winds. By Monday the 7th, the wind hits 28 mph. It’s just not worth paddling out. The spot goes quiet again, with moderate energy but messy conditions through to the 9th.

The Final Word

The only true standout is the morning of Friday the 4th of September. Get on it if you can. The rest of the window is a long, quiet wait for clean conditions, or a battle with messy, oversized onshore slop. Hang in there.

Rusty

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