Guayaguayare, Trinidad and Tobago offers 1 beach perfect for sunbathing, surfing, swimming, and more. Guayaguayare, Mayaro Rio Claro, Trinidad and Tobago, is known for its proximity to the Guayaguayare Bay and the oil and gas industry. The best time to travel to Guayaguayare, Trinidad and Tobago, is from January to May, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!