Partheni, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Partheni is known for its proximity to the historic Leros Island and the Partheni Airport. The best time to travel to Partheni, 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!