Rosslare, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Rosslare is known for its beautiful sandy beaches and the Rosslare Europort. The best time to travel to Rosslare, Ireland, is from June to August, with average air temperatures around 15-20°C (59-68°F) and sea 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!