Isla Arena, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Isla Arena is known for the Santuario de los Flamencos, a sanctuary for flamingos and other wildlife. The best time to travel to Isla Arena, Mexico, is from November to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures approximately 77-82°F (25-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!