Italy has numerous climate zones thanks to its range of latitudes and topographies. If you're visiting the Dolomites in October you'll definitely want to add a packable puffer jacket and cozy wool socks to the list above. On the other hand, if you're planning a visit to visit the far south like Sardinia in September or October you can trade the long sleeves and jackets for dresses and even a swim suit! A packable sun hat will be the perfect completer piece.