Hypothermia death is kinda my dream too, though I specfically want to die in a blizzard. I don't like the cold as much as you do but I also easily heat up and have a preference for colder temperatures.
My reasoning mostly stems from the first time I saw a blizzard, I decided to go out at night and there wasn't a single person outside. The streets were empty, it was me and a world of white. In the moment, I so wanted to lay down in the snow and just die, because it was so peaceful and beautiful. And it's been my dream method since. Too bad my area doesn't get that many blizzards :(
I have made a test by going out at night in freezing temperature and lying down without a coat or jacket, protected only by a miniskirt, thin blouse, stockings and lingerie, and wearing make-up and perfume to give me a degree of self-confidence in enduring the cold. It seemed I would die by just lying there long enough and faster if abandoning my skirt and blouse to die just wearing lingerie. Without being aware at the time, I have meanwhile learned that I was getting involved in partial "paradoxical undressing", as a completely normal behavior for those committing suicide by hypothermia, which gives me much assurance that it is the right thing to do.
The only thing I couldn't really stand was the effect of the cold on my fingers, so I should wear gloves for CTB. Overall, I enjoyed the feeling, especially when I felt a gust of wind, knowing it helps to cool the body more.
As the cooling proceeds, I expect to shake uncontrollably, experience numbness of the body and gain reassurance and peace knowing then that I am on the way with a falling pulse and just have to wait a little longer for death. The shivering, loss of coordination, mild confusion, amnesia and irrational behaviour will distract me from being aware that my organs are beginning to fail. The cold creates a deceptive sense of calm and warmth. Finally, the shivering stops and I know then that I have succeeded and am about to become unconscious, fall into coma and die.
No nausea, no vomiting, no headaches, no pain, no complicated substance ingestion protocols, no equipment . It seems such a calm, peaceful way to CTB and pleasurable despite it taking quite some time to the end. In air, I suppose the lower the temperature, the faster the process proceeds. So it has to be extreme cold.
Best location: a remote forest.
Fastest: in water, around one hour