Carran Upper and Lower, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Carran Upper and Lower, Ulster, Ireland, is known for the Marble Arch Caves Global Geopark. The best time to travel to Carran Upper and Lower, Ireland, is during late spring to early autumn (May to September) when the average air temperature ranges from 50°F to 65°F, and the water temperature is around 50°F to 60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!