Isla Cristina, Spain offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Isla Cristina is known for its beautiful beaches and the annual Carnival celebration. The best time to travel to Isla Cristina, Spain, is from June to September, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 22-24°C (72-75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!