The best time to visit Naxos, Greece, is during the late spring to early fall, specifically from May to October when the weather is warm and sunny, ideal for beach activities and exploring the island. June through September offers the warmest temperatures and the least amount of rain, making it perfect for swimming and water sports. However, if you prefer a quieter visit with fewer tourists and mild weather, consider the shoulder months of May and October. We visited in October and it was perfect!