I quickly found out how hot it gets inside my gear once the summer temps arrived. Although I really like my HWK riding jacket that I purchased when I got my scooter, I realized it was just going to be too hot for summertime riding, even with the air vents all open.
So, I purchased a second riding jacket for the summer. This one is made from a mesh material that allows for good airflow all over. Makes a big difference on these hot and humid days, and I figure between the two of them, I have things covered from the hottest days of summer to the cooler days of fall, as the original jacket also has a zip-in liner when it gets cold enough to need a bit more insulation.
I'm not going to complain too much about the heat, though. I know I will be really sad when it finally gets cold enough to have to put the scoot away for the season...