Leaving in a week & very excited to see Spain for the first time!
For packing, I've selected 4 tops, 2 capris & a cute black dress that works for day or night. (Bringing 2 scarves & a necklace) Also, I have a couple of 3/4 sleeve nicer tops & a pair of long black pants. I'm taking a black very light raincoat & a loosely woven lightweight black cardigan. The black sweater has been good during past trips to Italy to provide a little warmth when we're eating late in the evenings or to wear with the black dress to an opera.
I'm debating whether to also bring a thin fleece jacket to wear in the mornings before it warms up each day; I would wear it on the plane, too. For the travelers who have been to Madrid, Seville, Granada, etc. in late September/early October, did you need a lightweight jacket?