Blyth, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Blyth is known for its historic Blyth Battery and the scenic Blyth Beach. The best time to travel to Blyth, United Kingdom, is from June to August, when the average air temperature is around 15-20°C (59-68°F) and the North Sea water temperature is approximately 13-16°C (55-61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!