I don't put much faith in semi-permeable membranes like Gore-Tex in the high humidity of Summer in the NorthEast.
https://www.patagonjournal.com/index...id=266&lang=en
My experience has been exactly as described above. A cheap PVC rain slicker and a fancy high tech shell perform the virtually the same in high humidity.2) Gore-tex is meant for cool places, not the tropics
A breathable membrane of any kind won’t be much help when you’re in the Amazon. In basic terms, your hot sweat molocules need a cooler place to escape to. That works great when you’re skiing or hiking in the mountains. In the hot, humid tropics however, the sweat has nowhere to go. It’s just as hot and humid outside as it is around your body. So the sweat just sits there. Technology can’t save you there—unless it’s the technology in your air-conditioned hotel room. So this is exactly what you want for skiing/snowboarding, hiking, or living in a place like Seattle or Iceland, but not what you want for a boat ride down the Amazon.