How long does it take for hypothermia to kill you?

Even so, hypothermia still takes about 30 minutes to set in, and between an hour and two hours to kill you. Before this, if death does occur, it will probably result from complications due to something called cold shock. ... Try touching your thumb with your little finger – if you can't do it, it means your muscles are failing. read more

Even water temperatures as high as 75 and 80 degrees F (24 and 27 degrees C) can be dangerous, but it would most likely take much longer than 15 minutes to become debilitated. read more

Factors like body fat, age, alcohol consumption, and especially wetness can affect how long hypothermia takes to strike. If you fall into water, the situation becomes drastically more dangerous. For example, in water 32.5 degrees Fahrenheit or colder, you might not survive more than 15-to-45 minutes. read more