Hi Smirky,
We have been going to Arillas twice a year now and when we have gone out of school time, at the end of May begining of June it has been just right for everybody as we have 3 girls under 16, the other time is usually end of Sept. begining Oct and thats the same, and if you don't mind flying at night thats always alot cooler and less hassle, which we prefer.
But this year we have to go in July due to exams !! but we will be definately flying at night.
Paul/Deb5