Postira, Croatia offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Postira is known for Lovrecina Bay and its sandy beach, as well as the cultural heritage site of the Church of St. John the Baptist. The best time to travel to Postira, Croatia, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures around 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!