Myrina, Greece offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Myrina is known for its Byzantine Castle, Archaeological Museum of Lemnos, and the beautiful beaches of Riha Nera and Plati. The best time to travel to Myrina, Greece, is from late May to early October, with average air temperatures ranging from 70°F to 85°F and water temperatures from 70°F to 77°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!