Groomsport, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Groomsport is known for its picturesque Groomsport Harbour and the historic Cockle Row Cottages. The best time to travel to Groomsport, United Kingdom, is from June to August, when the average air temperature is around 15-18°C (59-64°F) and the water temperature is approximately 13-15°C (55-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!