Gyles Quay, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Gyles Quay, Leinster, Ireland, is known for its scenic views of the Cooley Peninsula and the Mourne Mountains, as well as its historic pier and beach. The best time to travel to Gyles Quay, Ireland, is during the summer months of 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!