If you are looking for excellent beaches and fun oceanside activities, then try some of the various sites along the southern coast of Maine. A great beach to visit is Scarborough Beach State Park just off Route 207 near the town of Scarborough.
This beach consists of a long stretch of sand on Prouts Neck. There is enough sand on this beach that the continual coastal winds have formed sand dunes. The water is relatively warm and the waves coming in provide excellent surf.
The Park has parking for 500 cars so expect to see a few other people while there. Lifeguards are on duty for swimmer's safety, there are bike racks and restrooms. The Scarborough Beach State Park connects with Higgins Beach. Swimming, hiking, biking, walks along the beach, searching for shells, sunbathing and surfing are all available at Scarborough Beach State Park.