No one truly acclimates to the heat. I am in Orlando, moved here in February from South Florida( Ft. Lauderdale). The heat in Orlando feels about 10 degrees above south Fl b/c you don't have the ocean breeze and I don't do well at all.

I had a couple days off of work last week and was going to ride early but had to wait until after the repair guy came out( washing machine broke down). I ended up getting on the bike around 11 and by 12 I felt like I was going to pass out. I got stopped at a light and had to pour water on my head, fully unzip jersey and soft pedal for a while- had to cut workout short and skip last interval.

I have grown up in Florida and used to work outdoors full time(taught horseback riding for a few years) and I still am not acclimated to the heat.

Don't be discouraged by it! and don't let it get to you, just know it is hot and we aren't meant to do that much in that type of weather.

Also... last month we went to Nationals in Augusta for the SO to race in the elite men. He raced in France last year, has his UCI license,etc. He DNFed from the crit, with only 10 laps to go, due to heat exhaustion- his eyes were sort of yellow, he couldn't stand or make a sentence for a while, tingles,etc.

EVERYONE has issues with the heat and that is why we all are crazy and wake up at 5:30am to get it done before 10am-lol!!

so don't be discouraged, be proud that you did as much as you did