I think you'll be very surprised as to how warm the PV semi-trads are. Heat rises, wear wool kilt hose and a sweater or jacket and you'll be fine.
Here's a pic of me in a USA Kilts casual (same fabric, fewer pleats) on a windy 18 degree F day at the Grand Canyon...with 8 degree updrafts at the edge! Plenty warm.

Another suggestion would be to lose the belt. The straps work fine to hold up the kilt and you have less weight and its a lot easier on the belly when you sit. But up to you of course.
Ron
Who's purchased 23 USA Kilts so far because of their VALUE.
Ol' Macdonald himself, a proud son of Skye and Cape Breton Island
Lifetime Member STA. Two time winner of Utilikiltarian of the Month.
"I'll have a kilt please, a nice hand sewn tartan, 16 ounce Strome. Oh, and a sporran on the side, with a strap please."
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