Rooska, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Rooska, Munster, Ireland, is known for its proximity to the scenic Rooska Waterfall and the picturesque landscapes of the surrounding Knockmealdown Mountains. The best time to travel to Rooska, Ireland, is during the summer months of June to August, when the average air temperature is around 15-20°C (59-68°F) and the water temperature is approximately 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!