Temperatures over 105°F/40°C can be deadly for some people. Hydration is just one of several factors that affect how much heat the human body can handle. As far

Temperatures over 105°F/40°C can be deadly for some people. Hydration is just one of several factors that affect how much heat the human body can handle. As far as I know, a reasonably healthy person with hydration and shelter wouldn't die from the heat alone anywhere on earth. But people often can and do die during heatwaves in many parts of the world.