Ptuj, Slovenia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ptuj is known for its historic Ptuj Castle, the annual Kurentovanje festival, and the oldest wine cellar in Slovenia. The best time to travel to Ptuj, Slovenia, is from June to August, with average air temperatures around 25°C (77°F) and water temperatures in nearby lakes around 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!