The best time to go to Castelnuovo Cilento is during the shoulder seasons, specifically May, early June, or September. These months offer pleasant weather, fewer crowds, and a more relaxed experience.For couples seeking a romantic and tranquil getaway, May and September are ideal. The temperatures are comfortable for exploring the Cilento National Park, visiting archaeological sites like Velia, or enjoying the coastal towns without the peak summer rush. You'll find a good selection of restaurants open, and the beaches are less populated, allowing for peaceful strolls and swims.Travelers looking for warm weather for beach activities and water sports, but still wanting to avoid the busiest period, will find early June to be an excellent choice. The sea is warm enough for swimming, and most tourist facilities are fully operational.