Well I'm from Phoenix, Arizona in the heart of the dry and hot. During the summer time here it will easily get between 115 and 120 degrees for a while. You don't really want to be outside for long no matter what, BUT if i am going to be outside, the ventilation that a kilt offers is much betters than that of pants.

Like you said though, I'm not wearing a 16oz heavyweight kilt either during the summer. We only really have two seasons here in the valley. Hot, and not so hot.

There are a lot of X Markers that either live here in Arizona, or used to that i'm sure will comment as well.