Valti, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Valti is known for its proximity to the beautiful beaches of Halkidiki and the historical site of Mount Athos. The best time to travel to Valti, Greece, is from late May to early October, with average air temperatures ranging from 75-85°F (24-29°C) and water temperatures around 73-79°F (23-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!