Grums, Sweden offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Grums is known for its proximity to the scenic Lake Vanern and the beautiful Varmland countryside. The best time to travel to Grums, Sweden, is during the summer months of June to August, when the average air temperature is around 18°C (64°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!