Radolfzell am Bodensee, Switzerland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Radolfzell am Bodensee, Baden Wurttemberg, is known for its proximity to Lake Constance and the Mettnau Peninsula nature reserve. The best time to travel to Radolfzell am Bodensee, Switzerland, is from June to August, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!