Hartlepool, United Kingdom offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Hartlepool is known for the National Museum of the Royal Navy Hartlepool and the historic HMS Trincomalee. The best time to travel to Hartlepool, 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 14-17°C (57-63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!