how crowded is cinque terre 7th nov

I guess I can not speak to an organized tour, and I have not been there in November...but that is definitely past the peak season. Most of the independent travellers and European visitors will be gone, so unless there are Cruise Ship tours or other big organized tours, the crowds will not be there. However, at some point over the Winter, shops and restaurants may reduce hours or close for a period of time, and the weather is starting to turn. Still a great place to go, but to be honest, not the ideal mid-May (or Summer), beach, resort coast type experience.

If it is raining, do not go! As mentioned above, it is post-season and many businesses close. If it is raining there is nothing to do in the Cinque Terre. Nothing. Spend your money elsewhere and come back to see the Cinque Terre between April and October. There is plenty to see and do in Firenze to occupy your time!

No guarantees, but I very much doubt it will be crowded at all at that time of year. Many of the businesses will be starting to wind down for the season, and as the others have mentioned the weather could also be an issue. If you get a sunny day, it should provide a good opportunity to get a glimpse of the five towns.

I agree with the other comments on this thread. November is off season for the Cinque Terre. First, its not necessary to book a tour to do it since its easy enough just to buy a train ticket once you get to Florence. Second, many shops are seasonal in the Cinque Terre so I would expect it to be pretty quiet in November.

I can't image why you would need a guided tour. There is essentially nothing to see other than the towns, themselves; i.e, no notable churches, no museums, no landmarks. Personally, I found the towns boring and immensely over-hyped. Italy is full of quaint, pretty towns, many of them in Tuscany and many far more interesting.