Stenness, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Stenness is known for the Standing Stones of Stenness, a significant Neolithic monument. The best time to visit Stenness, United Kingdom, is during the summer months of June to August, when the average air temperature is around 15°C (59°F) and the water temperature is approximately 12°C (54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!