One can travel in Italy all year long, the Mediterranean winter being relatively mild, even if snow and rain happen, of course, but the red wine tastes better, and especially some winter dishes like a nice fat cotechino, or a memorable mixed sboiled meat dishes in a hot bowl.
The favourite periods are spring and fall, in particular from Easter (whenever it is) to June, then late August to October. You can add two extra months for an early, or late holiday if you will pick Sicily.
Summer July and August are a bit hot, if you arrive from northern latitudes, just normally pleasant if you come from Florida, Southern California, Australia or India. Yet they are just ideal to visit the Dolomites, surrounded by the Sudtyrol, Prosecco, and Valpolicella vineyards. The real issue is, instead, to find a good hotel, since they are - hopefully - crowded with lively Italian families that stay there by the week. Therefore, in addition, July and August, are also peak season for the hotel rates.
Entering the Country
No vaccinations are required to enter Italy from the U.S.
The tap water is always drinkable, very good in most towns, but not neessarily good. Bottled water can be expensive, but more and more often, the environmental friendly towns, hotels, and restaurants, provide free filtered water at the table.
Citizens of North America, Canada, Australia, New Zealand and European union nationals need valid passports but are no longer required to have tourist visas (for a nonworking stay of less than 90 days).
Italy is six hours ahead of Eastern Standard Time and nine hours ahead of Pacific Standard Time.
The EU/Italian unit of currency is the € (Euro). Check with your bank for the current exchange rate. The most convenient way to change money to € is to use “bancomat” (ATM) machines, located at all major airports, train stations and banks. Bureaux de change can be found in all major towns. Some Bancomats may also accept Visa, MasterCard, and American Express cards. Changing money at a bank can be frustrating, time consuming, and, especailly at Exchange Offices in touristic towns, a legal ripoff.
.... More to come.