Kythira, Greece offers 39 beaches perfect for sunbathing, surfing, swimming, and more. Kythira is known for its stunning beaches, the Venetian Castle of Chora, and the Monastery of Panagia Myrtidiotissa. The best time to travel to Kythira, Greece, is from May to September, with average air temperatures ranging from 22°C to 30°C (72°F to 86°F) and water temperatures between 20°C and 25°C (68°F to 77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!