Tenby, United Kingdom offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Tenby is known for its picturesque harbor, sandy beaches, and medieval town walls. The best time to travel to Tenby, United Kingdom, is from 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!