Charmouth, United Kingdom offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Charmouth is known for the Jurassic Coast, a UNESCO World Heritage Site famous for its fossil-rich cliffs. The best time to visit Charmouth, United Kingdom, is from June to September, when the average air temperature is around 15-20°C (59-68°F) and the sea temperature is approximately 15-17°C (59-63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!