Kerteminde, Denmark offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Kerteminde is known for the Fjord & Baelt marine research center and the Johannes Larsen Museum. The best time to travel to Kerteminde, Denmark, is during the summer months of June to August, when the average air temperature is around 17-20°C (63-68°F) and the water temperature is approximately 16-18°C (61-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!