Drumanagh, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Drumanagh is known for the Drumanagh Promontory Fort, an ancient archaeological site with historical significance. The best time to visit Drumanagh, Ireland, is from June to August, with average air temperatures around 15-20°C (59-68°F) and water temperatures near 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!