Birchington on Sea, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Birchington on Sea, England, United Kingdom, is known for Quex Park and the Powell-Cotton Museum. The best time to travel to Birchington on Sea is during the summer months of June to August, when the average air temperature is around 18-22°C (64-72°F) and the sea 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!