Glenelg, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Glenelg, Scotland, United Kingdom, is known for the Glenelg Brochs, which are well-preserved Iron Age structures. The best time to travel to Glenelg, United Kingdom, is during the summer months of June to August, when the average air temperature is around 15-18°C (59-64°F) and the water temperature is approximately 12-14°C (54-57°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!