The hottest day ever officially recorded was 134°F (56.7°C) in Death Valley, California, on July 10, 1913.

 

The hottest day ever recorded on Earth was on July 10, 1913, in Furnace Creek Ranch, Death Valley, California, USA, when the temperature reached an astonishing 134°F (56.7°C). This record is officially recognized by the World Meteorological Organization (WMO). Death Valley, known as one of the driest and lowest places on Earth, often experiences extreme heat because of its geography—surrounded by mountains that trap hot air and its below-sea-level basin that intensifies temperatures.

There was once another claim of an even hotter day: in El Azizia, Libya, in 1922, where temperatures reportedly reached 136.4°F (58°C). However, in 2012, WMO invalidated that record due to unreliable measurement methods and errors in observation. That left Death Valley’s 1913 record as the most credible.

More recently, Death Valley has repeatedly approached this historic record. For instance, in August 2020 and July 2021, Furnace Creek reported 130°F (54.4°C), one of the hottest reliably measured temperatures in modern times. Scientists believe rising global temperatures from climate change may cause even higher records in the future.

So, the answer is: The hottest day ever officially recorded was 134°F (56.7°C) in Death Valley, California, on July 10, 1913.

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