Around home here on my small country ccerage, I wear lightweight Sportkilts or Stillwater economy models with sandals or sneakers.. Being a Scott, I'm sure you would probably consider either to be more skirtlike than a kilt However, I have worn a full 9 yard 16oz heavyweight kilt along with hose, heavy leather belt and sporran at summer Celtic festival when the temperature was near 100F and humidity near 90%. After 65+ summers in Virginia heat and humidity, I an much more accustomed to those conditions than you or anyone else from Scotland would be. I was hot, but I would have been just as hot in shorts and not nearly as comfortable.

As an example. While working as an instrumentation technician at a large chemical plant, I was assigned to work with a factory technician on installing a new conveyor belt scale. He had gotten on a plane early that morning and arrived at the plant around 9am. It was July and by 9 in the morning it was already close to 90. It had been around 55deg F when he boarded his plane in Minnesota. I didn't have the heart to tell him that it was predicted to reach 100 deg, with very high humidity, or that temperatures in the top of the chemical fertilizer building were already well over 100f. In the plant, neither kilts or shorts were permitted, so we both wore long cotton pants and long sleeve shirts to protect against burns from hot pipes. I thought he was going to die from the heat before we were done. While I was hot, it did not affect me nearly as much as him because I was used to the conditions. Now, in my upper 60s, I play golf every Tuesday. My senior golf group of over 100 members ranges in age from 60 to our oldest at 87 years old. Most are 70 or older. We all handle the temperatures by staying hydrated. I will drink 4 to 7 bottles of water every time I play during the summer. Out of over 100 who play every week, only a few ever miss playing due to the heat. It is all what your body is accustomed to.