It's tough and I don't have the answer. "Cone loaded serums help control humidity on hair, but I am simply defeated in this awesome Atlanta heat/humidity and I do not fight my texture and do not attempt elaborate, high maintenance styles during summer. I usually wear buns or textured styles that stay looking good no matter what.
When I HAVE to look extra elegant for weddings, parties, etc., I do it up for THAT event and go right back to buns and textured hair. No fuss, no muss, less work, more fun, less worrying about how my hair looks. . .