Water Cay, Turks and Caicos offers 1 beach perfect for sunbathing, surfing, swimming, and more. Water Cay, Caicos Islands, Turks and Caicos, is known for its pristine beaches and the annual Conch Festival. The best time to travel to Water Cay, Turks and Caicos, is from November to April, with average air temperatures around 80°F (27°C) and water temperatures near 78°F (26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!