Horten, Norway offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Horten is known for the Royal Norwegian Navy Museum and the Borre National Park. The best time to travel to Horten, Norway, is from June to August, when the average air temperature is around 15-20°C (59-68°F) and the water temperature is approximately 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!