The beach of Posidonio consists of a number of small pebble beaches around a bay. The beach is accessible if you take the turn to Paleokastro leading from the road between Vathi and Pythagorion. In Paleokastro you take the turn to Posidonio. The beaches are located in the southeast of the island of Samos and the route here is very nice. leading through the woods and with beautiful views here and there. In this area there are even more beaches such as the beach of Kerveli or the beach of Klima.
On the beach at Posidonio there are some tavernas and cafes and you can rent umbrellas and sunbeds. In the bay there can be some wind, making it popular for watersurfers.