Dorchester, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dorchester is known for its association with the famous author Thomas Hardy and the nearby prehistoric site of Maiden Castle. The best time to travel to Dorchester, United Kingdom, is from June to August, with average air temperatures around 18°C (64°F) and water temperatures near 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!