Rivermouth Surf Forecast and Surf Report

G’day, I’m Rusty, and I’m calling it for Rivermouth. Over the next two weeks, we’ve got some decent action, but you’ll have to wait for it. There’s a proper standout on Monday, September 14th, and a smaller clean session after that. Before that, there’s a long dry spell with nothing worth wetting a suit for.

Right off the bat, it’s a slow grind. Saturday and Sunday, September 5th and 6th, bring small swell – 3 ft to 6 ft from the SSE and SSW – but the wind is cross or cross-on, and the conditions are marginal. Combined energy is modest (555 to 2348). Not a goer. Monday the 7th sees a 7 ft S swell with 15-second period, but it’s thrashed by a 19 mph NE cross-wind, all lumpy and messy. Tuesday the 8th has 6 ft E swell, but same story – cross-wind kills it.

Then it drops off a cliff. From Wednesday the 9th through Saturday the 12th, we’ve got tiny waves, 1 ft to 3 ft, or onshore junk with poor conditions. Combined energy is low (44 to 386). There’s a 8 ft spike on the 12th, but it’s onshore and choppy – no thanks.

Now, Sunday the 13th of September brings a big 10 ft to 12 ft E swell, with strong energy (3132). But it’s flagged as too big for Rivermouth – expert-only, and the cross-wind adds chop. Skip it.

Here’s the gold. Monday the 14th of September, afternoon at Rivermouth. A 6 ft SSW swell with a 12-second period rolls in – real groundswell with proper push (combined energy 1289). The wind goes glassy – dead calm from the south. The comment says “excellent surf conditions for experienced surfers.” This is the pick. The SSW direction matches the optimum S direction. The break is very consistent, and crowds are possible. At 6 ft, it’s a bit too big for beginners. Water temp is 66°F, about 2°F cooler than average – just a touch cool.

Tuesday the 15th of September stays glassy, with a 3 ft SSW swell at 11 seconds in the morning (combined energy 448). Clean and calm, a fun smaller follow-up, but Monday is the power session.

After that, it fades. Wednesday the 16th has strong 22 mph WSW cross-off winds, but only 3 ft of swell – too small. Thursday the 17th shows a 4 ft SSW swell at 14 seconds with cross-off wind, but it’s marginal. From the 18th through the 20th, bigger but lumpy E swell (7 ft to 8 ft) comes in with strong cross-wind, creating chop. No good.

Conclusion: Monday, September 14th afternoon, with the glassy SSW groundswell, is your best shot. Tuesday morning is a runner-up for smaller, clean waves. The rest you can sleep through.

Rusty

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