Milford Haven, United Kingdom offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Milford Haven is known for its Pembrokeshire Coast National Park and the Milford Haven Waterway. The best time to visit Milford Haven, United Kingdom, is during the summer months of June to August, when the average air temperature is around 16-20°C (61-68°F) and the water temperature is approximately 15-17°C (59-63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!