Nantasket Beach Surf Forecast and Surf Report

Alright, this is Rusty. Let’s get into it.

We’re looking at Nantasket Beach and, honestly, it’s a tough stretch ahead. For the first week and a half, there’s just nothing doing. The surf is flat or tiny, with weak, short-period slop. We’ve got a gap from now all the way through to the morning of Sunday, September 20th, where the recommendations are basically zero. Winds are messy or onshore, and the energy is pathetic – we’re talking single-digit combined energy values like 8 or 10, which is basically lake status. You’d be better off taking a nap.

Sunday, September 20th finally sees a little pulse of life. The morning brings a 3ft swell from the NNE, but it’s short-period at 5 seconds, and the wind is a cross-shore breeze. Combined energy is 60 – weak. Not worth getting excited about. The afternoon gets a bit bigger, with 5ft from the NE, period 6 seconds, and the combined energy bumps to 187 (moderate). But it’s still cross-onshore wind, so it’ll be bumpy. This is still in the “poor surf” category.

Monday, September 21st keeps the moderate energy going (172 in the morning), but with a 4ft swell from the ENE and a gentle cross-onshore, it’s not clean. The wave comment tells the story: poor surf conditions.

The real standout, if you can call it that, is the window on Thursday, September 24th. The morning is a write-off with heavy rain and a strong cross-shore wind, but the afternoon flips. We get a 5ft swell from the east, period 8 seconds, combined energy of 319 (strong). And the wind goes light, cross-off from the WNW. That’s the cleanest wind we’ve seen all forecast. The wave comment even says “expect good surf conditions” for that afternoon window. The swell direction (E) is not the optimum NE, but with that clean wind, it’s the best bet. It’s still a beach break, so with 5ft, it’s approachable for strong intermediates, but beginners might find it a handful. Crowds are possible here on a clean day, so be ready for company.

After that, it fades fast. Friday the 25th drops back to poor conditions with onshore wind, and the weekend goes straight into the toilet with rain, strong winds, and tiny swell. The combined energy plummets to 19 by Sunday the 27th, and we’ve got a 25 mph wind making a mess of things.

So, the only true standout in this 16-day stretch is the afternoon of Thursday, September 24th at Nantasket Beach. That’s your window. It’s a long way out, so keep an eye on it, but if the wind holds, it’s the only time the ocean gives us something real to work with. Otherwise, it’s a long, dry spell.

Stay patient. Rusty.

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