M Street Beach

No dogs from April 1 to September 15. Dogs allowed the rest of the time (local leash laws apply)

This beach's own DCR page says May 1 to September 15; DCR's statewide page says April 1.

Source: Massachusetts DCR, Saltwater Ocean Beaches. Checked October 28, 2026.

Shorebird nesting areas can close to dogs at short notice. Follow the signs at the beach.

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Massachusetts DCR (state beaches): the rule in full

No dogs on any DCR (state) ocean beach from April 1 to September 15, except service animals. DCR's beach pages give April 1; the state regulation (302 CMR 12) says May 1 "unless otherwise posted". We show the longer April 1 date. Shorebird nesting areas can close for longer.

Nearby beaches

• Pleasure Bay BeachNo dogs from April 1 to September 15. Dogs allowed the rest of the time (local leash laws apply)
• Carson BeachNo dogs from April 1 to September 15. Dogs allowed the rest of the time (local leash laws apply)
• Wollaston BeachNo dogs from April 1 to September 15. Dogs allowed the rest of the time (local leash laws apply)
• Constitution BeachNo dogs from April 1 to September 15. Dogs allowed the rest of the time (local leash laws apply)
• Winthrop BeachNo dogs from April 1 to September 15. Dogs allowed the rest of the time (local leash laws apply)