Named-water planning guides
Marine forecasts by bay and sound.
A broad marine forecast is a good start. The harbor you are leaving, and the water between here and there, usually deserves a closer look. Compare source-backed boating conditions around bays, sounds, and coasts.
Massachusetts · 6 briefings
Buzzards Bay marine forecast
A harbor-by-harbor view of the Buzzards Bay marine forecast, from New Bedford to the passages around Woods Hole.
Compare local conditionsMassachusetts · 5 briefings
Cape Cod Bay marine forecast
One place to compare marine conditions from Plymouth and Sandwich around to Wellfleet and Provincetown.
Compare local conditionsMassachusetts · 5 briefings
Massachusetts Bay and Cape Ann marine forecast
Compare Boston Harbor, the South Shore, and Cape Ann before a route leaves harbor shelter for the wider bay.
Compare local conditionsMassachusetts · 2 briefings
Boston Harbor marine forecast
Inner-harbor briefings for Boston and Hingham, with the open bay and Cape Ann kept on their own page.
Compare local conditionsRhode Island · Connecticut · 5 briefings
Block Island Sound marine forecast
A cross-sound view of conditions around Block Island, Watch Hill, Mystic, and New London.
Compare local conditionsConnecticut · New York · 10 briefings
Long Island Sound marine forecast
A harbor-by-harbor view of the Long Island Sound marine forecast, from the narrower western Sound through the central reaches to the eastern approaches near the Connecticut River and the Race.
Compare local conditionsMassachusetts · 7 briefings
Nantucket Sound marine forecast
A harbor-by-harbor view of the Nantucket Sound marine forecast across the Cape, Martha’s Vineyard, and Nantucket sides of the sound.
Compare local conditionsMassachusetts · 6 briefings
Vineyard Sound marine forecast
Cape-side harbors and the Vineyard's sound shore, beside the Nantucket Sound page rather than folded into it.
Compare local conditionsRhode Island · 4 briefings
Narragansett Bay marine forecast
A practical comparison of boating conditions from Newport and Jamestown north toward Bristol and Wickford.
Compare local conditionsMaine · 3 briefings
Casco Bay marine forecast
Start with Portland Harbor, then compare nearby Maine coast briefings for a wider read on the day.
Compare local conditionsMaine · 7 briefings
Maine Coast marine forecast
A coast-long comparison from the southern harbors to Mount Desert, without treating Casco Bay as the whole state.
Compare local conditionsHow to use these pages
Start wide. Finish local.
Each guide groups reviewed harbor briefings around a named body of water. Use the region to understand the setup, then open the places closest to your departure, route, and destination.
Boat or Nope keeps NOAA and National Weather Service source identities visible and marks a call Incomplete when decision-critical data is missing. These pages add context; they do not replace the official coastal waters forecast or your final pre-departure check.