Burnham on Sea, United Kingdom offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Burnham on Sea is known for its iconic Burnham-on-Sea Lighthouse and the nearby Brean Down. The best time to travel to Burnham-on-Sea, United Kingdom, is during the summer months of June to August, when the average air temperature is around 18-20°C (64-68°F) and the water temperature is approximately 16-18°C (61-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!