AC question

I am considering purchasing a Zenn NEV to be used in Florida. While test driving the vehicle I noticed the air conditioning temp. was barely cold. This was experienced on a mild day. I can’t imagine the system creating any coldness when the temp. hit 90. Anyone have any experience during very warm days or is there a way to increase the coldness of the system? Does anyone have any general negatives about the car?
Thanks for your help