I remember going to visit my aunt at her place on the beach in California, then lying down on the bsand. The sand felt unbelievably hot, and very uncomfortable. I moved to the shade, but no matter what I did it was just extremely hot. Very unpleasant sensation. I was sweating like crazy.
I then woke up to find my fan on the floor, and I was actually sweating, with my blankets in a tangle around my feet. Not too hard to interpret, I think.