Las Cuevas, Trinidad and Tobago offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Las Cuevas, San Juan Laventille, Trinidad and Tobago, is known for Las Cuevas Beach. The best time to travel to Las Cuevas, Trinidad and Tobago, is from January to May, with average air temperatures around 82°F (28°C) and water temperatures near 81°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!