When I was out in Texas I could tolerate the 115º heat of the Permian Basin... but when I would have to go over to another client in east Texas... 95º there was like Hell... just because of the lack of evaporative cooling with the nearly constant 90+% RH.
When I lived in Yemen, on the south side of the Rub' al Khali (empty quarter), it was so dry, it was hard to describe. The desert there had no growth at all because it was so dry, just in sheltered places like the bottom of wadi (canyon).
You would walk around in 125 degree temps and not get sweaty. The catch was, you were sweating like crazy but may not realize it. The sweat would near instantly evaporate, never accumulating on your skin. If you stayed out to long without drinking water, you would get dizzy and pass out, but not get sweaty.
Definitely a different story here in the Texas Gulf Coast.