Can it be hot to death at 39 degrees?

yes. Heat stroke is the most serious case of high temperature-related emergencies, that is, severe heatstroke, which is a symptom that the body's regulatory function is unbalanced due to exposure to high temperature and high humidity, and heat production is greater than heat dissipation, which may lead to death. The normal temperature of a person is 36-37 degrees. People who stay in the environment with weather of 39 degrees for a long time will endanger their lives and suffer from heatstroke and die.