Boat or Nope

Massachusetts boating conditions

Boston Harbor marine forecast

Inner-harbor briefings for Boston and Hingham, with the open bay and Cape Ann kept on their own page.

The regional picture

One body of water. More than one kind of boat day.

Boston Harbor is a different boat day from Massachusetts Bay. The islands, commercial channels, and the airport shore can be workable while the water outside Hull and on the South Shore is already a longer fetch.

This page stays on the inner harbor. For Gloucester, Marblehead, and the South Shore, use the Massachusetts Bay and Cape Ann marine forecast, then come back to the departure harbor before you leave the dock.

Harbor-level briefings

Compare conditions around Boston Harbor

Inner harbor

Protected water inside the harbor islands.

MABoston Harbor

A large island-studded harbor combining commercial channels, protected waters, and an urban waterfront.

Open marine conditions MAHingham Harbor

A sheltered South Shore harbor reached through Hingham Bay, with islands, moorings, and shallow margins.

Open marine conditions

Tide charts

Tide charts around Boston Harbor

Before leaving the dock

Three useful checks for Boston Harbor

  1. Compare Boston Harbor with Hingham when the route stays inside the islands.
  2. Open the Massachusetts Bay and Cape Ann page before a route leaves harbor shelter.
  3. Use the Boston tide chart for the shared CO-OPS prediction, and the harbor page for the Go, Caution, or No-Go call.

What this regional guide can - and cannot - do

These pages make it easier to compare the latest available forecast and observation inputs around Boston Harbor. They are planning aids, not navigation or safety guarantees. Check the official coastal waters forecast, current observations and notices, local conditions, and your own boat and crew before departure.

See how Boat or Nope builds each call