Hi all I went last year for New Year it was fantastic. I met a lady in April 2014 so no more Just You holidays for me!!!
It was pretty chilly most of the time and I spent most of the week wearing the winter coat I had taken to Gatwick. It was especially cold at Granada which is high and inland - the overnight temperature had been below zero when we arrived. But the sun is lovely too.
The New Year's bash is quite glitzy. Mainly Spanish there who really dress up.
I hope this helps, I am sure you will enjoy it last year was absolutely lovely.
Regards
Ian