Dunnet, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Dunnet is known for Dunnet Head, the northernmost point of mainland Britain, and the scenic Dunnet Bay. The best time to travel to Dunnet, United Kingdom, is from 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!