Fredericia, Denmark offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Fredericia is known for its well-preserved 17th-century Fredericia Ramparts and the annual 6th of July Festival. The best time to travel to Fredericia, Denmark, is from June to August, when the average air temperature is around 17°C (63°F) and the water temperature is approximately 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!