Neapoli, Greece offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Neapoli, Peloponnese, Greece, is known for the nearby Elafonisos Island and the Petrified Forest of Agia Marina. The best time to travel to Neapoli, Greece, is from May to September, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 72-77°F (22-25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!