La Cruz, Costa Rica offers 18 beaches perfect for sunbathing, surfing, swimming, and more. La Cruz, Guanacaste, Costa Rica, is known for Santa Rosa National Park and its beautiful beaches like Playa Rajada. The best time to travel to La Cruz, Costa Rica, is from December to April, with average air temperatures around 85°F (29°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!