The hot the better for me :)
40 degrees?
30°c +
High environmental temperatures can be dangerous to your body. In the range of 90˚ and 105˚F (32˚ and 40˚C), you can experience heat cramps and exhaustion. Between 105˚ and 130˚F (40˚ and 54˚C), heat exhaustion is more likely. You should limit your activities at this range. An environmental temperature over 130˚F (54˚C) often leads to heatstroke.
Like 12°c
Above 35 degrees
22c is my cut off. Anything higher makes me uncomfortable. If im exercising the cut off is 19c
Probably about 9 or 10 degrees
Hot
Well I don't do well with heat anyway, so what most people consider "warm" is usually uncomfortable for me.