Morne Diablo, Trinidad and Tobago offers 1 beach perfect for sunbathing, surfing, swimming, and more. Morne Diablo is known for its serene beaches and fishing village charm. The best time to travel to Morne Diablo, 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!