September is Sardinia’s best month. Sea at 25–26°C (warmer than June), Italian families gone, prices dropping 30–40% from August.
Plan this trip →Warmest sea of the year. All beaches open, most beach clubs operating through Sept. Vendemmia (grape harvest) for Cannonau and Vermentino. Cortes Apertas (autumn village festivals): Barbagia villages open their doors for food, wine, craft weekends (Sept–Dec, different village each weekend).
Shoulder by mid-Sept. Costa Smeralda €80–150. South €40–80. Car rental €20–35/day. Best value + best weather = September.