Laurium, Greece offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Laurium is known for the ancient silver mines of Lavrion and the Temple of Poseidon at nearby Cape Sounion. The best time to travel to Laurium, Greece, is from May to September, with average air temperatures ranging from 70°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!