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 six Northeast bays and sounds.
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 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 conditionsMassachusetts · 7 briefings
Nantucket Sound marine forecast
Compare conditions across the Cape, Martha’s Vineyard, and Nantucket sides of the sound.
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 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.