Quote Originally Posted by Tellos Athenaios
A good reason would be, as anyone who's got experience with the harsh sun of the East & South, the fact that going naked into battle is a bad idea if you would want to keep your body from over-heating. In fact it isn't altogether unlikely that the West, coastal regions of Europe would actually offer better conditions for fighting naked during the winter than during the summer.
How does armour keep you cooler?