Llandysul, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ullerslev is known for its proximity to the Egeskov Castle, a renowned Renaissance water castle in Denmark. The best time to travel to Llandysul, 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!