Derrynadivva, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Derrynadivva, Leinster, Ireland, is known for its proximity to the historic Boyne Valley and the ancient site of Newgrange. The best time to travel to Derrynadivva, Ireland, is from May to September, with average air temperatures around 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!