For a smartphone application click here.


2025 ATTENTION: The sites have been updated in two ways. New stations have been added and others have been updated in formulas. More importantly the station listing now better follows the coastline and bays. The list starts near New Hampshire and goes to near Rhode Island. It should be much easier to find neighboring sites.

How to use: Pick the site in Massachusetts for the tides. Then scroll to the bottom of this page. Select (highlight) the month, start date, and total days. Press the Get Tides button.

Merrimac River and Plum Island

Essex to Lynn

Boston, Boston Harbor, Quincy Bay and to Hull

Cohasset Harbor to Plymouth

Cape Cod Clockwise from Provincetowm

Offshore, East of Chatham

Cape Cod Canal

Island Chain off Woods Hole

Martha's Vineyard

Nantuckett Island

Onset to Taunton River


Pick the month for the tides,

First day for tides, and

How many days of tides?

Press a button.


www.saltwatertides.com