Vance River, Trinidad and Tobago offers 1 beach perfect for sunbathing, surfing, swimming, and more. Vance River, Siparia, Trinidad and Tobago, is known for its proximity to the Pitch Lake, one of the largest natural asphalt deposits in the world. The best time to travel to Vance River, Trinidad and Tobago, is from January to May, with average air temperatures around 27°C (81°F) and water temperatures near 26°C (79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!