Driver door when it gets hot outside it won't open???

Driver door when it is hot outside won't open until it cools down but still opens hard in AZ.

 

I have this problem with lots of cars in Hawaii when they sit in the sun. The rubbers and plastics and various coatings get tacky from heat. Thus your door gets “stuck” to some extent.

 

I second the idea of using a fine powder. I am a devoted fisherman and in the course of my activity I have often sprung a leak in my chest waders that I have to patch. A quality product, Aqua Seal, patches very well but remains very "grippy" and grabs at my legs when I try and put on after the patching - a real pain. To remedy it, I take a material patch that looks like sheep skin and I apply a small coating of baking powder to it and use it to pat down the Aqua Seal patch and thereby remove the grip. I have never had to repeat the process, though were you to do it, I would think it may need a touch-up now and then, but it should work.

Taking it to another level, I would look for a graphite powder as probably being more weather resistant. Which brings to mind the "anti-seize" thread coating I recently applied to my spark plugs. It seemed to be a graphite + paste compound, and quite possibly more durable and weather resistant than any powder, though a bit more expensive. I would give it a try.