Nantasket Beach Surf Forecast and Surf Report

Alright folks, Rusty here. Let's take a long, hard look at what Nantasket Beach has in store for us over the next couple of weeks. Gotta be straight with you—this is a tough one to write.

Honestly, for the next sixteen days, Nantasket Beach is looking flat and pretty lifeless. We’ve got a solid stretch with nothing to get excited about. The first solid run of surf... well, it never really shows up. From Thursday the 20th of August all the way through to Friday the 4th of September, every single session is marked as poor surf conditions. That’s a long, quiet spell.

The first few days are just tiny. Thursday morning, we're looking at a pathetic 1.0 ft of swell coming out of the ESE with a short period of 8 seconds. The combined energy is barely a whisper at (12), and with glassy conditions it might look pretty, but there’s nothing to ride. That theme just keeps going—tiny 1 ft waves, onshore or cross-onshore winds, and energy values staying in the low teens and twenties. Friday the 21st has some NE wind messing up what little swell there is.

We get a bit of a bump on Saturday the 22nd of August—heavy rain and a gusty 19 mph ENE wind whipping up a messy 3 ft from the ESE. The period drops to a terrible 4 seconds, so it's just wind slop. Energy is still weak at (47). Not worth getting wet for anything but a kite, honestly.

The best wind we see comes on Monday the 24th, with clean offshore winds from the W and WNW on the 25th. But the swell is still tiny—1 ft and 0.7 ft—with periods that are either too short or have a bit of length (11 seconds on the 25th) but no height to push them. The combined energy drops to (16). It’s clean enough to look at, but you won't be catching much.

There’s a slight lift in size on the 28th of August, with swell hitting 3 ft from the SE, but that’s a short-period 5-second windswell blowing in from the NE and ENE, making it lumpy and cross-onshore. That 3 ft might sound tempting, but with only 5 seconds of period, it’s just a bumpy mess for a beach break like this. Energy sits at (49)—still weak. The rest of the run into early September is the same story: tiny waves, weak energy, and mostly onshore or cross-shore winds.

There are no standout days here. Nothing even close. For a spot that’s usually consistent, this is a rough patch. The water temp is about average for the time of year, but that doesn’t help the lack of rideable swell.

Keep the board in the car, maybe go for a paddle if you just need to get wet, but there’s nothing worth a session here for the next sixteen days. Forecasts can change, so don't lose hope entirely, but right now? It’s a flat spell, plain and simple.

Rusty.

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