Sonderborg, Denmark offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Hastings Point is known for its stunning views of the Pacific Ocean and the nearby Cudgen Nature Reserve. The best time to travel to Sonderborg, Denmark, 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!