Gytheio, Greece offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Gytheio, Peloponnese, Greece, is known for its picturesque harbor, the ancient theater of Gytheio, and the nearby shipwreck of Dimitrios. The best time to travel to Gytheio, Greece, is from May to September, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 22-26°C (72-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!