Mandraki, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Mandraki is known for the iconic Colossus of Rhodes, a wonder of the ancient world. The best time to travel to Mandraki, Greece, is from May to September, with average air temperatures ranging from 75°F to 85°F and water temperatures from 70°F to 78°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!