Laguna Grande, Peru offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Laguna Grande, Ica, Peru, is known for the Paracas National Reserve and the Ballestas Islands. The best time to travel to Laguna Grande, Peru, is from May to September, 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!