Kilkeel, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Kilkeel is known for its picturesque harbor and as a gateway to the Mourne Mountains. The best time to travel to Kilkeel, United Kingdom, is from June to August, with average air temperatures around 15-20°C (59-68°F) and sea temperatures near 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!