Copeland, United Kingdom offers 14 beaches perfect for sunbathing, surfing, swimming, and more. Copeland, England, United Kingdom, is known for the Lake District National Park and the historic Muncaster Castle. The best time to travel to Copeland, United Kingdom, is during late spring to early autumn (May to September) when the average air temperature ranges from 10°C to 18°C (50°F to 64°F) and the water temperature is around 12°C to 16°C (54°F to 61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!