Doonaha, Ireland offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Doonaha, Leinster, Ireland, is not widely recognized for specific tourist attractions or proper nouns. The best time to travel to Doonaha, Ireland, is from June to August, with average air temperatures around 15-20°C (59-68°F) and water temperatures around 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!