I wrote a blog post on this topic. TL;DR, I think Texans can ignore most of what the moto press and reviewers say about "hot weather gear".
https://joshkarnes.blogspot.com/2019/08/august-sucks-or-why-there-is-no-way-to.htmlIn related news (and mentioned in my blog), I did buy a new jacket and a used one as well because my old ones were too big. The perforated leather one I got was stupidly cheap from Amazon:
https://www.amazon.com/gp/product/B079G12J1X/I say stupidly cheap because the quality is way above what you'd expect for that price point. I only have one complaint with it, and that's the pointy shoulders when in riding position, but besides that minor niggle that will probably go away once it's broken in, that jacket is legit. 100% perforated. I rode with it today (you can see it in the picture I posted on the picture game thread), and while I didn't exceed 85 degrees in it, it did prove that it flows a ton of air. It's not 100% like a mesh jacket, but it's maybe 75% as much airflow as my mesh jacket.
And speaking of which, I bought a used Bilt Techno mesh jacket. It's a tighter weave mesh than the Power Trip Gauge that I was using before, so it is not quite as breezy but it's cooler because it's white.
Anyway, I will probably ride the mesh jacket when it's >85F for the entirety of my ride. I actually think I'll be cold in the perf leather jacket if it under 70F, so I'll have to wear something under it (like the liner it came with!) in those conditions.
104F right now but the high tomorrow is only 98. Gonna feel like a cold front blew in.