Juist, Germany offers 1 beach perfect for sunbathing, surfing, swimming, and more. Juist, Lower Saxony, Germany, is known for its stunning beaches and the Wadden Sea UNESCO World Heritage Site. The best time to travel to Juist, Germany, is from June to August, when the average air temperature is around 18°C (64°F) and the water temperature is approximately 17°C (63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!