When I went abroad it was scorching on a night, we didn't even have sheets on. Whereabouts in spain are you going? I've never been with kids so would't know what to suggest for what to take. I've a tip for you though if anyone (esp your little boy) gets too hot. Stick a towel in the fridge when you grt up! I know it sounds barmy but when you go to bed get the towel out and it will be really cold-gorgeous!! My mum did it when we went to tuerkey years ago and the temp was in the 100's. Trust me
