Santa Rosa, Ecuador offers 12 beaches perfect for sunbathing, surfing, swimming, and more. Santa Rosa, Galapagos, Ecuador, is known for the Charles Darwin Research Station. The best time to travel to Santa Rosa, 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!