Cornish Reef Surf Forecast and Surf Report

Alright, crew, Rusty here. Let’s break down what Cornish Reef has in store for the next couple of weeks. Gotta be honest, it’s a bit of a tough stretch. Most days are gonna be a no-go, so you’ll have to time it right.

First off, the water temp is about 63°F, which is a touch warmer than usual for this time of year. A nice little perk if you’re in the water.

Right now, Thursday the 27th, we’ve got a weak 2ft swell from the west with a 9-second period. The combined energy is only 81, so it’s weak. The cross-off wind from the NE at 12 mph keeps it clean, but honestly, the waves are just too small and gutless to bother with. Same story in the afternoon—2ft and still poor. Not worth paddling out.

Friday the 28th and Saturday the 29th are a total waste. The swell drops to nothing, wind is all over the place, and there’s some rain. The combined energy on Saturday morning is just 6. Leave the board at home.

Sunday the 30th shows a little pulse: 3ft to 4ft from the W. The energy climbs to 169 in the morning and 238 in the afternoon—that’s moderate. The wind is cross-off in the morning from the SE at 12 mph, so it’ll be clean. This is the first day that’s even worth thinking about, but it’s still just average.

Monday the 31st sees more size: 5ft in the morning, 5ft in the afternoon. Energy hits 453—moderate to strong. The problem is the wind is onshore or cross-on and gusty (up to 19 mph), making it lumpy. Not a classic day.

Now, here’s your real window. Friday the 4th of September is the standout. The morning session is glassy—wind from the SSE at just 3 mph. The swell is a solid 12ft from the west with an 11-second period, giving us a very long-period groundswell. Energy is massive at 2793. But here’s the catch: the break is gonna be too big for most folks. This is strictly for experts. The reef will be handling a lot of power, and with that long period, the waves will be thick and heavy. For experienced surfers, this is the session to chase. The afternoon gets messy with cross-on wind, so get it early.

Saturday the 5th of September is your option for a smaller day. The morning is marginal (6ft, 10-second period) with cross-shore wind and a slight chop. Not great. But the afternoon has a 5ft west swell, 10-second period, and a light cross-off wind from the SSE at 6 mph. Energy is 438. It’s clean, and the waves will be okay for intermediate surfers. Not a classic, but it’s one of only two decent windows in the whole outlook.

After that, it’s a long stretch of rubbish. Sunday the 6th and Monday the 7th are blown out with strong winds and messy conditions. From the 8th through the 11th of September, the swell fades to under 3ft, energy drops below 200, and the wind keeps ruining things. The morning of the 10th is at least clean with a tiny 2ft swell, but it’s barely surfable.

Overall, there’s no long, clean, big swell run here. The only true standout for experts is the glassy morning on September 4th. For everyone else, the afternoon of September 5th is your best bet for a clean, manageable session. Otherwise, this forecast is pretty lean.

Rusty.

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