Neustadt in Holstein, Germany offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Neustadt in Holstein is known for its Baltic Sea beaches and the Hansa-Park amusement park. The best time to travel to Neustadt in Holstein, Germany, is from June to August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!