Anavissos, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Anavissos is known for its beautiful beaches and the nearby Cape Sounion with the Temple of Poseidon. The best time to travel to Anavissos, Greece, is from May to September, with average air temperatures ranging from 75°F to 85°F and water temperatures from 72°F to 79°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!