I recently played an outdoor gig in Cascade, Idaho. It was close to 90 degrees and the elevation is close to 5000 ft. Though there was a canopy over the stage, because of where I was set up I got stuck in the sun for several hours. I got pretty woozy there for a while and didn't feel too good at all. I hate outdoor gigs! Besides the discomfort issue, I'm constantly tuning my guitar. And there are NO acoustics.