Park, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Munster, Ireland, is known for the Cliffs of Moher and the Blarney Stone. The best time to travel to Killarney National Park, 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!