Casablanca, Chile offers 15 beaches perfect for sunbathing, surfing, swimming, and more. Valparaiso The best time to travel to Casablanca, Chile, is from December to February, with average air temperatures around 25°C (77°F) and water temperatures near 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!