|Subject: Rome, Naples, weather - GTG?|
Congrats on the reduction of your luggage - but you are braver than I if you set off at that time of year without a jacket of any type.
Then again, I don't trust weather forecasts in my own country, let alone when I am travelling half way around the world, so you may think that I am over-cautious!
With your newly acquired light packing skills, you should be able to cram in - or wear - a very lightweight jacket of some description that would do in an emergency.
Then again, you could just use the excuse to buy a lovely souvenir, once you are in Rome or Naples and find that the evenings can be cool.
Happy travels, Joan, Melbourne, Australia