PierMonkey

Ditch Plains Surf Season

New York, USA · part of the Ditch Plains spot guide

Prime season: September – December
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QuietOccasionalConsistentPrime

Ditch is a fall-and-winter wave, prime September through December, on two Atlantic engines: late-summer and fall tropical systems throwing south-to-southeast swell, and autumn and winter Nor’easters and extratropical lows with northwest offshore behind the front. December is often the most consistent month, but frigid.

Where the swell comes from

Atlantic hurricanes and tropical systems provide the south-to-southeast groundswell from August to October; Nor’easters and extratropical lows provide the season-long east-to-southeast swell with clean offshore behind the front.

Historic swells at Ditch Plains

Sep 2021

Hurricane Larry

A distant major sent a long, clean pulse up the East Coast — one of the best East Coast days in years, with Montauk holding size.

Sep 2017

Hurricane Jose

A multi-day south-to-southeast swell brought waves to the dunes and swimming bans across Long Island.

Researched from published surf journalism, oceanographic references and chart data; figures are approximate and confidence-checked. Updated 2026-07-06.