Monemvasia, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Monemvasia is known for its medieval fortress and the Byzantine church of Agia Sofia. The best time to visit Monemvasia, Greece, is from May to September, when the average air temperature is around 25°C (77°F) and the sea temperature is approximately 24°C (75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!