Aha Rivermouth Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what Aha Rivermouth has got cooking for us over the next couple of weeks. I’ll be straight with you—this one’s a bit of a tough read.

Right off the bat, we’ve got a long dry spell. There’s no real surf to speak of for the first few days. The forecast kicks off on Friday the 4th of September with some fresh offshore wind, but the swell is tiny—around 3 ft from the east, with a short period. The wave energy is weak (174), and honestly, the conditions are poor. It’s a frustrating start.

We’ve got a gap of days here with nothing worth paddling out for. The weekend is a write-off, with messy winds and small, weak swell. The combined energy barely gets into the moderate range (883) on Saturday morning the 5th, but the swell is 6 ft from the northwest with an 11-second period. The wind is a fresh offshore, but the report flags it as marginal. It’s not clean enough to get excited about. The rest of that day and Sunday are a no-go.

The first half of the following week stays quiet. Monday the 7th through Thursday the 10th is all cross-onshore winds and poor surf. The swell is tiny, and the energy is weak. This is a tough stretch for a beach/jetty setup like this—honestly, with the wind and these conditions, it looks more interesting for kite surfing than paddle surfing.

Around Friday the 11th, we get a slight bump in the afternoon. The wind turns cross-offshore and clean, with a 3 ft southeast swell (7-second period). The energy is just moderate (114), but it’s clean. Still, it’s small and short-period, so don’t expect much.

The weekend of the 12th and 13th brings a long-period groundswell from the east (14 seconds!), but the wind is a fresh cross-shore or cross-onshore, and the swell is only 2 ft to 2 ft. The energy is moderate (around 105–233), but those long-period waves are going to be tricky at a beach/jetty break like this—they’ll be breaking straight and won’t offer much shape. The water’s around 83°, which is about average for this time of year, so no surprises there.

The best chance we see in the whole 16-day window is on Thursday the 17th of September. On the morning, the wind goes glassy—completely calm—and the swell is 2 ft from the east-northeast with a 13-second period. The energy is moderate (201). The report says “expect good surf conditions.” This is the standout. It’s small, but it’ll be clean and glassy, and with that long period, there’ll be some energy in the water. For a spot that’s “fairly consistent” but can be a bit fickle, this is the one chance to get a few clean ones. The crowd here is “sometimes,” so don’t expect total solitude, but it’s not a circus.

The rest of the outlook after that fades back into poor conditions with onshore winds and weak, small swell. The 19th of September (Saturday) is a no-go.

So, bottom line: we’ve got a long, slow start. Don’t bother with the first week. The one real highlight is the morning of Thursday the 17th—that’s your best bet. It’s late in the forecast, so keep an eye on it, but it’s the only clean, glassy window we’ve got.

Rusty.

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