Should I rug my horse for winter?

I got my horse in winter last year and he had a very woolly coat even though he came from a very hot climate. It's the beginning of Autumn now and his winter woollies have started so i'm debating rugging him as he still lives in a hot climate and last winter he would work up a sweat extremely easily which i... show more I got my horse in winter last year and he had a very woolly coat even though he came from a very hot climate. It's the beginning of Autumn now and his winter woollies have started so i'm debating rugging him as he still lives in a hot climate and last winter he would work up a sweat extremely easily which i was told was due to his massively thick coat.

So would putting a light rug on him at night /colder days stop the winter hair which makes him hot or should i just let it happen?

No-one else's horses around here gets winter hair at all so i'm very unsure.. thanks!
Update: sorry, i accidently submitted this question 4 times :(
Update 2: sorry, i accidently submitted this question 4 times :(
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