Holywell, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Holywell, England, United Kingdom, is known for St Winefride's Well, a historic pilgrimage site. The best time to travel to Holywell, 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 average water temperature is about 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!