Santiago de Tolu, Colombia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Santiago de Tolu is known for its proximity to the San Bernardo Archipelago and its beautiful beaches. The best time to travel to Santiago de Tolu, Colombia, is from December to March, with average air temperatures around 28°C (82°F) and water temperatures near 27°C (81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!