Sellebakk, Norway offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Sellebakk is known for its proximity to the Fredrikstad Fortress and the scenic Glomma River. The best time to travel to Sellebakk, Norway, is during the summer months of 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!