Keel, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Keel, Munster, Ireland, is known for the stunning Keel Beach and the scenic Achill Island. The best time to travel to Keel, Ireland, is from June to August, with average air temperatures around 15-20°C (59-68°F) and water temperatures around 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!