What is the average temperature on Earth?

The average temperature on Earth lies somewhere around 57 degrees Fahrenheit (13.9 degrees Celsius). According to climate information from the National Oceanic and Atmospheric Administration (NOAA), that was the 20th century average temperature, measured across land and ocean, night and day. However, the planet’s average temperature is rising. The 10 warmest years across the entirety of recorded human history have all occurred since 2005.

Based on NOAA’s temperature data, 2020 was the second warmest year ever recorded, just behind 2016. In the 21st century, average yearly temperature on Earth has been more than 2 degrees F (more than 1 degree C) higher than recorded pre-industrial temperatures.