Or, more precisely, the distance between the ground and the center of the eyeball. But assuming the earth were a perfect sphere: Average radius of earth = 6,372,797 meters Draw a circle representing the earth.
As a result, the Namib receives an average annual rainfall of only 2.5cm (1in). The sand dunes of the desert receive moisture from the atmosphere, in the form of fog. Every 10 days or so, a dense night fog rolls inland for a distance of 80km (50mi) or more, shrouding the coast and much of the desert. The fog condenses into a thick dew, creating an annual average of 4cm (1.6in) of moisture. Temperature in the Namib reaches a high of 66Â°C (150Â°F) in the middle of the day. Gravel and rock plains extend north from the Kuiseb River. The treacherous coastal waters of this region regularly snare ships, such as the Dunedin Star (1942) and the Shawnee (1976), and cast them up on the shifting sands.
This desert's average temperature ranges from 64 to 77 degrees Fahrenheit. The extreme temperature is 110.3 to 120 degrees Fahrenheit. The sand's average temperature is 64 degrees Fahrenheit. The winter brings a little rainfall, but the summers are hot and dry. The average rainfall is about one inch of rain. The soil is rocky and shallow. The Semiarid Desert The semiarid desert's average temperature in the summer is 110.3 to 80.6 degrees Fahrenheit. Normally the temperature doesn't go above 100 though.