Vlachia, Greece offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Vlachia, Central Greece, Greece, is known for its proximity to the Parnassos Ski Resort and the historic Delphi archaeological site. The best time to travel to Vlachia, Greece, is from late May to early October, with average air temperatures around 75°F (24°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!