Southerndown, United Kingdom offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Southerndown is known for its stunning Dunraven Bay, part of the Glamorgan Heritage Coast, which attracts tourists for its dramatic cliffs and scenic beauty. The best time to travel to Southerndown, United Kingdom, is during the summer months of June to August, when the average air temperature is around 18°C (64°F) and the sea temperature is approximately 16°C (61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!