Odd for me to hear people shift towards virginia and va/per blends in the summer; I do the exact opposite - because of their natural tendency to burn hotter, I almost always smoke those blends in cooler temps.
One blend I really appreciate in the summertime is Samuel Gawith's Balkan Flake. It's advertised as "Deliciously Cool" and that's pretty much exactly what you get. I popped a tin from 2013 a few months ago, but really have been waiting for the weather to get warmer before I tackled it.
Here's some pics I took when I popped the tin and jarred:
Man, if it didn't unceremoniously drop to 66 here today, I'd definitely have packed a bowl of this crystalized beauty. But alas, it's freezing today!