Aha Rivermouth Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s take a look at this stretch of coast. The forecast is a bit of a mixed bag—we’ve got a solid run of waves coming up, but the wind is going to be a problem for a lot of it. The standout period is looking like a mid-sized groundswell that arrives late in the first week, but it brings some serious size with it.

The early part of the week is a write-off, I’m sorry to say. For the first few days, from Tuesday through Thursday, we’ve got a fresh cross-onshore breeze blowing at 18 to 22 mph, and the swell is small and weak. The combined energy is only around 161 to 488 (moderate at best), and the waves are lumpy and messy. Definitely not worth paddling out for.

The wind eases up a bit on Friday, turning cross-offshore, but the swell drops right off to a tiny 0.7 ft to 2 ft, so it’s clean but flat. The weekend is much the same—tiny swell and a cross-shore wind, barely any energy.

Then we get to the real deal. Starting Monday, 24 August, a solid, long-period swell shows up. That ESE swell is 4 ft with a 16-second period. The combined energy jumps to 894 (moderate), and the wind is a moderate cross-on, so the surf will be choppy. It’s not perfect, but it’s a step up. By Tuesday, 25 August, that swell pushes to 8 ft, with a 17-second period, and the energy is 4552 (strong). The wind goes onshore from the NE at 12 mph, but it's clean. However, at 8 ft, we’re only talking about experienced surfers here.

The real monster is Thursday, 27 August. Huge, groundswell from the ENE at 26 ft with a 15-second period. The energy is 47860 (very strong). The wind is a moderate cross-shore. This is not for the faint of heart—this is big, powerful, and only for experts. The same goes for Friday, 28 August, with a 30 ft swell from the ESE, though the wind is clean cross-off at 18 mph. The break is too big for itself, honestly. We’re talking about a setup that looks more interesting for kite surfing than paddle surfing.

After that, it drops off a cliff. The weekend of 29-30 August is back to tiny, weak, and messy, with a cross-shore wind. The last few days of August and into September are poor, with no real swell.

So, the best bet? If you’re an expert, the last week of August is where it’s at. The Aha Rivermouth (beach/jetty) on Thursday, 27 August, is the standout. The swell is 26 ft from the ENE, with a 15-second period, and the wind is a moderate cross-shore. The energy is very strong at 47860. The crowd is rated as "sometimes", so it could get busy if people are brave enough. This is a true, big-wave session. The water temperature is 84°, which is about average for this time of year.

For a more manageable option, Monday, 24 August, is your best bet. The ESE swell is 4 ft with a 16-second period, and the energy is 894. The wind is a moderate cross-on, so it’s a bit choppy, but it’s the only window where the size is more forgiving for intermediates.

All in all, get ready for a big, powerful groundswell at the end of the month. The rest of the time, it’s either flat or blown out.

Rusty.

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