Gollan Hill, Ireland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Gollan Hill, Ulster, Ireland, is known for the scenic Gollan Hill Trail and its panoramic views of the surrounding countryside. The best time to travel to Gollan Hill, Ireland, is from May to September, with average air temperatures around 50-65°F (10-18°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!