Lier, Norway offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Lier is known for the Spiralen tunnel, a unique corkscrew-shaped road tunnel that offers panoramic views of the surrounding area. The best time to travel to Lier, Norway, is during the summer months of June to August, when the average air temperature is around 15-20°C (59-68°F) and water temperature in nearby fjords is approximately 14-18°C (57-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!