Banna Mountain, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Banna Mountain, Munster, Ireland, is known for its scenic hiking trails and panoramic views of the surrounding countryside. The best time to travel to Banna Mountain, Ireland, is from May to September, with average air temperatures ranging from 10°C to 18°C and water temperatures around 12°C to 15°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!