Karlshagen, Germany offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Karlshagen is known for its beautiful sandy beaches along the Baltic Sea and the nearby Peenemunde Historical Technical Museum. The best time to travel to Karlshagen, Germany, is from June to August, with average air temperatures around 20°C (68°F) and water temperatures around 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!