Part of what is needed here is an explanation of just how GoreTex works.
- GORE-TEX Membrane: The middle layer, the GORE-TEX membrane, is where the magic happens. GORE-TEX allows sweat vapor to escape through its microscopic holes while preventing rain and snow from entering. In scientific terms, the heat and moisture that your body generates during physical activity creates a partial pressure gradient that helps to transport your sweat through the GORE-TEX membrane. The warm, moist air inside the jacket wants to equalize with the drier, or cooler air outside the jacket. For a more detailed explanation, check out more from GORE-TEX.
See the Bolded part. Water Vapor takes advantage of pressure differences from the inside of the boot to the outside. That pressure difference enables the movement of the water vapor through the Gore barrier.
What happens when the humidity/heat inside the boot is the same as the outside of the boot? Like, here in the South? There’s little to no pressure difference…therefore the water vapor doesn’t have enough pressure gradient to pass through the gore-Tex barrier.
Further, If the outside of the boot gets saturated, then even if the vapor moves through the gore-layer, the vapor cannot move through the outside layer of the boot…and therefore gets trapped inside the boot once again. So, your feet start to stew in their own juices.
In other cases, the thermal difference is so great that the sweat vapor simply condenses into water before the vapor can pass through the barrier.
Long story short: just because you have Goretex doesn’t mean you won’t have wet feet issues because of simple human elements.
PS: Rubber boots - as mentioned earlier…100% waterproof. And within a limited amount of time your feet will just be soaked in sweat.
Best advice I can give: bring one or two spare sets of socks and swap them out once or twice a day, giving the worn socks time to dry out between uses.