It's the dry air that makes people sick who aren't used to living with an AC, I see it in the office every year. I'd say Barcelona is right around the area wher

It's the dry air that makes people sick who aren't used to living with an AC, I see it in the office every year. I'd say Barcelona is right around the area where an AC makes sense, you have 2 months per year being a little annoying but nothing unbearable. Also, it still rains in summer.