Welcome to Three Mile Harbor!

Three Mile Harbor is conveniently located between Sag Harbor and Amaganset.  This This beautiful Harbor is East Hampton's most popular port with access to Marinas, Anchorages, Restaurants, Groceries and more.

You will find the harbor is well protected and offers a beautiful natural anchorage.  The harbor is extremely long and very shallow along the west side of the channel.  See our navigation page for more details.

We have visited this harbor both in our Rosborough and in our sailboats and it is always a pleasure.  We know you will enjoy it as well.

Marine Regulations...

• There is a 5 M.P.H. Zone posted for entering and inside the harbor.  Please be aware of your speed and wake in this area.  
• There are no Jet Skis allowed anywhere in the harbor.
• There is a no discharge one inside the harbor.  Pump-out dock and boat is available.  See Marine Services for more information.  To see a map of pump out facilities inside Three Mile Harbor click here.

Please respect local regulations and help keep our harbor clean!

Don't forget to visit our East Hampton Photo Gallery!