Overview
Winthrop Jetty is the closest surf spot to central Boston, formed by a large jetty at the southern end of Winthrop Beach. It's a right-hander that breaks over a bottom of cobblestones and boulders.
When It Works
The spot draws swell from northeast to east, with northeast swell the best match. It works from 0.6 m / 2 ft to 2.4 m / 8 ft. Consistency is only medium, so the good days come and go rather than lining up week after week.
Wind and Tide
Look for west offshore wind. The jetty can work through low, mid, and high tide, though a rising tide is generally the better call. From mid to high tide, an east-to-northeast swell with any westerly wind sends predominantly righthanders breaking close to the jetty. At low tide the wave moves out onto the outside shoals, which knocks the size of the reforms down considerably.
Local Tips
Because it only breaks with medium consistency, the lineup rarely gets crowded. The water can be polluted, especially after rain, though Boston Harbor has improved since the city retired its old sewage plant in favor of a new secondary-treatment works.
Access
A lifeguard covers the beach, and there's free roadside parking.
