Captains Cove, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Captains Cove, Ulster, Ireland, is known for the Giant's Causeway, a UNESCO World Heritage Site featuring unique basalt column formations. The best time to travel to Captains Cove, Ireland, is from June to August, with average air temperatures around 60-70°F (15-21°C) and water temperatures around 55-60°F (13-16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!