i'm flying my wife down Aug 17 - 26 staying at POR. then me, my sister, 3 daughters 11, 11 and 7 and the pooch are driving down arriving on Aug 19 leaving on 26th. We are coming from minneapolis. I like the drive, done it 2 times prior. the mrs will do it but since my sister comes with, i opt to fly her down early. just works out better.
we did an august trip 10 years ago when my 24 week micro preemies were 14 months old. it was hot but wasn't surface of the sun hot i didn't think. the humidity slaps you in the face when you walk out your door and that takes some adjustment but as the week went on i don't remember noticing it as much. we had chilly towels, did not do parks from open to close. more pool time than i've ever done. as long as the rain is infrequent, we will manage.