Carrigaholt, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Carrigaholt is known for Carrigaholt Castle and dolphin watching tours in the Shannon Estuary. The best time to visit Carrigaholt, Ireland, is from May to September, with average air temperatures around 15-20°C (59-68°F) and water temperatures around 12-16°C (54-61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!