Rerrin, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Rerrin, Munster, Ireland, is known for Bere Island, a popular destination for hiking and exploring historical sites. The best time to travel to Rerrin, 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!