Cullen Hill, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cullen Hill, Munster, Ireland, is known for its proximity to the scenic Ballyhoura Mountains and the Ballyhoura Mountain Bike Trails. The best time to travel to Cullen Hill, Ireland, is from May to September, with average air temperatures ranging from 50-65°F (10-18°C) and water temperatures around 55-60°F (13-16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!