Warkworth, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Warkworth, England, United Kingdom, is known for Warkworth Castle and the nearby Hermitage. The best time to travel to Warkworth, United Kingdom, is during the summer months of 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!