I have got my first lessons in Lignano!

if necessary you can rent some stuff here
http://www.islandsurf.it/you should go on the "isola delle conchiglie" seashell islan, if the bora (very strong wind) does not blow, you will normally need a 12/14m for warm days in the afternoon.
Sicily is big... so is difficult to give you an answer but besides the strong days, normally in sicily during summer there is a nice steady termal wind but also there is not very strong 16knots...
enjoy
