Avellanas Rivermouth Surf Forecast and Surf Report

Alright, grab your stick, let’s talk about the next couple of weeks here at Avellanas Rivermouth.

Right off the bat, we’ve got something to get excited about. The first slot on Monday the 17th of August is looking pretty damn sweet. The wind is glassy, absolutely dead calm, and we’ve got a clean 4ft SW groundswell pumping in. The water is 86° and a touch warmer than normal for this time of year, which is a nice bonus. The combined swell energy is chunky at 611 (moderate). It sets the week up nicely, but that’s the high point for the next few days.

Tuesday and Wednesday are a bit of a write-off for good surf. The wind swings cross-on or onshore, and conditions turn choppy or just plain messy. The swell hangs around 3ft to 4ft, but without the right wind, it’s not worth paddling out. There’s a brief window on Wednesday afternoon with glassy conditions, but the swell is only 3ft – small and clean, a possibility for a longboard if you’re desperate.

We see a pattern emerge from Thursday on. The mornings are pretty much all blown out by ENE wind, but many afternoons clean up nicely with light cross-off breezes. From Thursday the 20th through Sunday the 23rd, the afternoons offer clean, ridable waves in the 2ft to 4ft range. The combined swell energy sits around 300 to 466 (moderate). Nothing huge, but fun and user-friendly. The period is mostly 10 to 15 seconds, so there’s some shape.

Now, let’s talk about the standout. If you can wait, the end of the month is where it’s at. The real action starts kicking on Friday the 28th of August and carries through that weekend. Friday afternoon we see a solid 4ft SW groundswell with a period of 19 seconds and a massive combined energy reading of 1184 (strong). The wind is cross-off and clean. That’s a proper groundswell with real push.

Then Saturday the 29th of August into Sunday the 30th is the absolute pick of the entire period. Swell builds to 5ft, still from the SW, with periods around 15 to 17 seconds. The combined energy peaks at 1806 (strong to very strong) on Saturday morning, and even with a slight cross-on breeze in the morning, the afternoons clean right up with light winds. This is excellent, powerful surf. Now, 5ft is getting up there, so it’s going to be a bit much for beginners. For experienced surfers, this is prime. The long period (over 15 seconds) means the waves will have plenty of grunt, and being a rivermouth, it should handle that energy well, though be ready for longer lulls between sets. This window (August 28-30) is hands down the best on offer, though being more than a week out, keep an eye on the forecast for any changes.

We taper off into the first days of September with clean afternoons again, swell dropping back to 3ft to 4ft, with the combined energy settling back to moderate (502 to 686). Good fun, but nothing compared to that blast at the end of August. This spot is fairly consistent, so even if the mornings are a write-off, there’s usually a clean afternoon session to be had.

Stay safe out there.

- Rusty

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