Hottest temperature recorded on Earth and what temperature is life-threatening

The British weather is unpredictable. From grey clouds and heavy rain to clear skies and a sizzling sun, we never know what type of summer we’ll receive.

In other parts of the world a hot summer is guaranteed – and actually lasts. One example of this is in the United States of America, a country which experiences a summer of 29 degrees celsius on an average.

But during 1913 the temperature soared through the roof in the US, with a record of 56.7C recorded.

The world record was measured at Greenland Ranch, Death Valley in California, USA.

With a daily average of 46 degrees celsius, Death Valley is named the hottest place on Earth. This is a combination of the lack of water, surroundings and geography of the valley.

The valley is very long, narrow, and is located around 282 feet below sea level, which influences the hot temperature.

Heat builds up from the rocks and dry soil, which becomes trapped in the valley, continuously becoming warmer.

Death Valley also experiences less than three inches of rain each year, making it one of the driest locations in the World.

What temperature could kill you?

The maximum body temperature a human body can tolerate is up to 42.3 degrees celsius, if the body becomes this warn it can become life-threatening.

This is known as Hyperthermia, when the body becomes too hot, known as a core body temperature from 37.5–38.3 degrees celsius.

Whereas the outside temperature a human body can tolerate depends on how long you’re experiencing the heat for and what type of heat it is.

When relaxing in a sauna at a temperature of 65 to 90 degrees celsius, the average person can tolerate the heat between five to 10 minutes. Experts suggest you should not sit in one for longer than 10 – 15 minutes.

High environmental temperatures can be dangerous for the body.

In the range of 32C to 40C you can experience heat cramps and exhaustion, according to Healthline.

However, heat exhaustion is more likely between 40C and 54C.

Healthline says: "An environmental temperature over 54C often leads to heatstroke".

Here are some of the common symptoms of heat exhaustion:

  • sweating heavily
  • exhaustion or fatigue
  • dizziness or lightheadedness
  • blacking out or feeling dizzy when standing up
  • weak but fast pulse
  • feelings of nausea
  • vomiting

And here are some of the symptoms of heatstroke:

  • reddish skin that feels hot to the touch
  • strong and fast pulse
  • losing consciousness
  • internal body temperature over 39C

The NHS says: "Heat exhaustion is not usually serious if you can cool down within 30 minutes. If it turns into heatstroke, it needs to be treated as an emergency."

You should call 999 if someone is having symptoms of heatstroke and is still feeling unwell after 30 minutes.

Or if they are:

  • not sweating even while feeling too hot
  • a high temperature of 40C or above
  • fast breathing or shortness of breath
  • feeling confused
  • a fit (seizure)
  • loss of consciousness
  • not responsive
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