Gargalianoi, Greece offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Gargalianoi is known for its proximity to the historic site of Ancient Messene and the beautiful beaches of Marathopoli. The best time to travel to Gargalianoi, Greece, is from May to September, with average air temperatures ranging from 70°F to 85°F and water temperatures from 70°F to 78°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!