Nienhagen, Germany offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nienhagen is known for the Gespensterwald, a unique and eerie coastal forest that attracts nature enthusiasts and photographers. The best time to visit Nienhagen, 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!