Pembrey, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Pembrey is known for Pembrey Country Park and Cefn Sidan Beach in regard to tourism. The best time to travel to Pembrey, United Kingdom, is during the summer months of June to August, when the average air temperature is around 18°C (64°F) and the water 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!