Trefor, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Maslin Beach is known for its status as Australia's first official nude beach and its stunning coastal scenery. The best time to travel to Trefor, United Kingdom, is during late spring to early autumn (May to September) when the average air temperature ranges from 12°C to 18°C and the water temperature is around 12°C to 16°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!