Cobblestones Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it. We’ve got one spot on the radar for this whole 16-day stretch, and it’s a bit of a wild ride, so let’s break it down.

The overall picture is a massive pulse of south-west swell slamming into this exposed reef, but it’s gonna be a battle with the wind for most of the run. This isn’t a beginner’s game; we’re talking serious, powerful groundswell with periods stretching from 13 to 16 seconds, which means deep water energy piling up fast. The water temp is sitting at 64.6°, which is pretty normal for this time of year, so no surprises there.

First up, we start on Tuesday, September 1st. The swell is already a solid 9.8ft from the WSW, but the wind is on it and the conditions are marginal. The combined energy is a hefty 3361 (moderate wave energy), but it’s just not clean. That carries into Wednesday the 2nd where the swell jumps to 11.5ft and the wind cranks up to 15.5 mph, making it a write-off. Thursday the 3rd is even bigger at 13.1ft, but with 24.9 mph cross-on winds, it’s a total mess. The energy is ramping into the very strong category (6044 and 5875), but you’d be mad to paddle out.

Friday the 4th is the first real standout. The morning is still a choppy 16.4ft, but by the afternoon, the wind swings offshore from the SW, and the swell holds at 16.4ft with a 15-second period. The energy hits a massive 11849 (very strong energy). This is a big, powerful wave for experts only. It’s a proper groundswell, and at a reef like Cobblestones, it’ll be bowling, but it’s not for the faint-hearted.

The weekend is a write-off. Saturday the 5th has near-gale winds, and Sunday the 6th is messy again, though the late afternoon Sunday shows a 16.4ft swell from the WSW with a 16-second period and 12.4 mph offshore wind. The energy is 13028 (very strong), and the score is a 6. That’s a solid window for the experienced crew.

Monday the 7th is another good window. The swell drops slightly to 14.8ft, but the period is still 16 seconds, and the wind is a gentle 9.3 mph offshore. The energy is 9311 and 10321 (very strong). This is quality, clean surf on a big, long-period swell. It’s a standout day for experts.

Tuesday the 8th is the best of the whole run. The morning sees a 14.8ft, 16-second swell with only 3.1 mph of wind—essentially glassy. The energy is 9286 (very strong) and the score is an 8. This is as clean as it gets for such a big wave. The afternoon drops to 13.1ft, 16-second swell, but the wind comes onshore slightly. The morning session on the 8th is the absolute call.

After that, the swell backs off. The 9th through the 11th see 9.8ft to 7.9ft waves with cross-offshore winds, but the energy is dropping fast (down to 4021 and 2587). It’s still surfable, but not the quality of the previous days. The 12th and 13th are poor again, with onshore winds and moderate energy.

The next real highlight is a week and a half out, on Tuesday, September 15th. The morning offers a 7.5ft, 13-second swell with light offshore winds from the E. The energy is 2438 (moderate), and the score is a 4. This is clean, smaller, and much more manageable. It’s a good call for intermediate surfers who want a piece of the action without the massive size.

The run ends on the 16th with the wind picking up again, blowing the 11.5ft swell out. It’s a solid finish to a big, moody forecast.

There’s a big gap in quality, but the standout is definitely Tuesday, September 8th morning.

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