Cobblestones Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it.

We’ve only got one spot on the radar for the next couple of weeks, and that’s Cobblestones. The first chance for a wave is Sunday afternoon, the 30th of August. We’ve got a solid 3.0m swell from the WSW, but it’s coming in at a very long 16 seconds. That period means the energy is deep and powerful, but at a reef break like Cobblestones, this longer period groundswell will actually help the wave stand up and shape up nicely. The wind is a light NW breeze at 6 mph, keeping things cross-shore with just a bit of texture, not ruinous. Water temp is 65°, which is a touch warmer than normal for this time of year, so it’s pleasant enough. This is the best on offer for the whole outlook – a rare standout where the power is real and the conditions are workable.

The combined swell energy is a massive 4844 (moderate to strong for this setup), so don’t be fooled by the “marginal” note in the data; the energy is there, it’s just a bit tricky with the long period. This is not a beginner wave at 3.0m over a reef – keep it for the advanced crew. The optimum swell direction is SSW, and this forecast is WSW, which is a little off, but still works for the break’s exposure.

After that Sunday session, the forecast gets messy. Monday the 31st sees winds swing to a strong WNW at 16 mph, turning cross-onshore and choppy. The swell drops to 2.5m but the quality plummets. Through the first week of September, we have a run of onshore and cross-onshore winds with lumpy, messy conditions. The surf size fluctuates from 3.0m up to 5.0m, but the wind is consistently poor. Tuesday the 1st has a rare moment of offshore wind at 9 mph, but the data calls the surf marginal at best for this break.

There’s a real gap in quality. The combined swell energy reads three-digit values (3148 to 5493) for the next few days, but the wind just kills the potential. Then on Friday the 4th of September, the swell jumps to 5.0m from the WSW with a 16-second period – that’s a serious amount of water moving. Energy hits 12569 (very strong), but the wind is still cross-onshore at only 9 mph, so it’s fairly choppy, not clean. The system is clearly pushing a lot of power, but the window for a proper wave is narrow.

The true promise shows up again on Monday the 7th of September morning. We see a 5.0m SW swell, 17-second period, and clean offshore wind from the WSW at 9 mph. Energy is 12728 (very strong). This is expert territory only – over 2.5m on a reef with that kind of power is no joke. The data notes that the swell might be too big for this break, so be very selective. The afternoon of the 7th stays clean but the swell holds at 4.5m from the SW.

Then, the absolute best session of the entire forecast: Tuesday the 8th of September morning. Clear skies, offshore cross-off wind from the north at 9 mph, and a 4.5m SW swell with a solid 16-second period. The combined energy is 10420 (very strong). The data flags this as exceptional for expert surfers. This is the true standout. Clean, powerful, long-period groundswell hitting a reef with offshore wind – that’s as good as it gets for the advanced crew.

Wednesday the 9th holds similar quality: 5 to 5.0m WSW swell, 16 seconds, clean cross-off winds from the north-northeast at 12 mph. Energy sits around 10559 to 12327. This is a solid second option, but the Tuesday morning is the winner.

After the 9th, the wind starts to turn more cross-shore and then cross-onshore again, and the swell stays big but messy. There’s a gap of poor to marginal conditions from the 10th of September through to the end of the outlook on the 14th, with onshore winds and too much size for comfort. Nothing worth a long drive.

So, the call is simple: you’ve got a few fleeting, high-quality windows at Cobblestones, but they’re all for expert surfers only. The Tuesday the 8th of September morning is the absolute standout. The water is a touch warm, the power is deep and the wind is clean. Don’t miss it.

Rusty.

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