Bangor, United Kingdom offers 11 beaches perfect for sunbathing, surfing, swimming, and more. Bangor, Northern Ireland, United Kingdom, is known for the Bangor Marina and the North Down Coastal Path. The best time to travel to Bangor, United Kingdom, is from June to August, when the average air temperature is around 15-20°C (59-68°F) and the water temperature is approximately 14-16°C (57-61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!