Guadalupe, Greece offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Guadalupe, Western Greece, Greece, is known for its proximity to the ancient site of Olympia, where the original Olympic Games were held. Guadalupe is not in Greece; however, if you meant the island of Gavdos, Greece, the best time to visit is from May to September, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 72-79°F (22-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!