Colliers, Cayman Islands offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Colliers, East End, Cayman Islands, is known for the Queen Elizabeth II Botanic Park and the Wreck of the Ten Sail historical site. The best time to travel to Colliers, Cayman Islands, is between December and April, with average air temperatures around 77-85°F (25-29°C) and water temperatures around 79-82°F (26-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!