Caolas, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Caolas, Scotland, United Kingdom, is known for its proximity to the Isle of Tiree and the scenic views of the Hebridean islands. The best time to travel to Caolas, United Kingdom, is from June to August, when the average air temperature is around 15°C (59°F) and the water temperature is approximately 13°C (55°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!