I do just fine in Florida in July with no A/C. To be honest with you, I'm a fat guy with sweats a lot anyway and I find a bikini top (to keep the sun off you) with no doors and no top does just fine in the heat. Even at 10-15MPH (stop and go traffic), the breeze helps.
Now, where it's bad is my S10 where there is top and doors and even with the windows down there's not a lot of air flow...
Denis A. Baldwin
1991 YJ 2.5L, 1" BD MML, Ultimate 8.8, Super D30, 4.88 Gears, Detroit Lockers, 36" Super Swamper SAM-26s on Ion 171s, RE SOA w/RE1445 springs, Bilstein 5150s, 3in. BL, custom cage, Warn M8000, Double D Dash/OHC, 4Low Front Stinger Bumper, DirtWorx Rear Bumper WTC, Tube Fenders, RR OTT Steering and PAID FOR.