Juli, Peru offers 1 beach perfect for sunbathing, surfing, swimming, and more. Juli is known for its historic colonial churches and its location on the shores of Lake Titicaca. The best time to travel to Juli, Peru, is from May to September, with average air temperatures around 60°F (16°C) and water temperatures in Lake Titicaca around 50°F (10°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!