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.
Central highlands around Windhoek. Between the Kalahari in the east and the Namib Desert in the west lies the Namibian central highland with the capital Windhoek in its centre. Due to its altitude of 1700 metres on average (at Windhoek even up to 2000m) this highland has moderate temperatures and average rainfalls.ain in the Namib Desert in the record rainy season of 2010/2011. Generally when looking at the average weather the yearly cycle can be summed up as follows: During the months December to March it is generally hot throughout the country.