Karlstad, Sweden offers 1 beach perfect for sunbathing, surfing, swimming, and more. Karlstad is known for its iconic Karlstad Cathedral and the scenic Lake Vanern. The best time to travel to Karlstad, Sweden, is during the summer months of June to August, when the average air temperature is around 20°C (68°F) and the water temperature in nearby lakes 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!