San Juan de Marcona, Peru offers 1 beach perfect for sunbathing, surfing, swimming, and more. San Juan de Marcona is known for its beautiful beaches and the nearby Paracas National Reserve. The best time to travel to San Juan de Marcona, Peru, is from December to March, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!