In Badeparken in Åsgårdstrand, you will find a large grassy and sandy area as well as a volleyball court. It is in the immediate vicinity of Åsgårdstrand guest harbour and Grand Hotel Åsgårdstrand. Badeparken has municipal toilets, a jetty with a diving board and bathing stairs, a handicap ramp and permanent grills.
The coastal path from Åsgårdstrand to Horten starts just north of the beach, so it's nice to combine a trip there with a dip in the sea.