Montalvo, Ecuador offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Montalvo, Esmeraldas, Ecuador, is known for its proximity to the beautiful beaches of the Esmeraldas province. The best time to travel to Montalvo, Ecuador, is from June to September, with average air temperatures around 77°F (25°C) and water temperatures near 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!