Ardnahinch Bay, Ireland offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Ardnahinch Bay is known for its stunning sandy beaches and scenic coastal views. The best time to visit Ardnahinch Bay, 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!