Hey, Greg, welcome!
I play down in Palm Springs area a few times during summer, it's the lower desert (CA). I had that problem, "hot feet", that I've mentioned or asked if I was the only one who was experiencing that among friends . . . I've been told I need a half size larger or a wider pair. And also, yes, type of socks helped as well as light colored shoes (whites). Out there, I interchange a rotation of two GreenJoys and a DryJoy during summer. (I used to wear those shoes in the winter when I have to wear double socks for winter cold in the high desert.) Hope it helps.