I find the difference in temperature between light, medium, and heavy weight cloth to be slight. I find the greatest thing that makes a kilt outfit warm or cool is how I accessorize it.

I wear mostly four yard box pleated kilts, and live in NC. And I find a four yard kilt from 16 oz wool to be a great choice to wear year round, accessorizing appropriately for the season.

I have also had four yard kilts made from 13 oz wool, and did find those a bit light to wear in the colder winter months.

Regardless of whether one is getting an 8 yard kilt or a 4 yard kilt, or anything in between, my advice is always to go with the heaviest weight that is available within your budget, as it really makes a nicer looking, longer lasting kilt.

~M