San Jacinto, Ecuador offers 1 beach perfect for sunbathing, surfing, swimming, and more. San Jacinto, Manabi, Ecuador, is known for its beautiful beaches and the nearby Machalilla National Park. The best time to travel to San Jacinto, Ecuador, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!