Guillermo Prieto, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Guillermo Prieto, Veracruz, Mexico, is known for its rich cultural heritage and vibrant local festivals. The best time to travel to Guillermo Prieto, Mexico, is from November to April, with average air temperatures around 75°F (24°C) and water temperatures near 80°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!