1. Cooper’s Beach, Southhampton
As the Village of Southampton’s main beach, it has all the amenities you’d need for a full day in the sun. Rent a chair and an umbrella and kickback with a treat from the nearby concession stands. Afterward you won’t even have to worry about dragging sand back to your hotel or rental—the well kept bathrooms have freshwater showers. 268 Meadow Ln (631-283-0247)
Photograph: Flickr/CC/Shinya Suzuki