Average rainfall in the Atacama desert is only a few millimeters per year. However, there are parts of the desert that have measured no rainfall in over 400 years. The desert is a huge place and each area reports differing amounts.
The Atacama Desert is commonly known as the driest place in the world, especially the surroundings of the abandoned Yungay town (in Antofagasta Region, Chile). The average rainfall is about 15 mm (0.6 in) per year, although some locations, such as Arica and Iquique, receive 1 to 3 mm (0.04 to 0.12 in) in a year.
The desert rarely receives more than a few millimeters of rainfall each year and there are some areas that have not experienced rainfall since the arrival of Europeans in the 1500s.
Most areas of the desert receive little rainfall, just a few millimeters of precipitation. Some areas have received absolutely no rainfall in over 400 years.
Both rain and snow are very rare occurrences in the Atacama Desert. The answer would be virtually none.
Overall, the desert receives virtually no rain, sometimes for hundreds of years.
Less than 1/4" per year.
There is no 'Atlantic Desert.' Do you mean the Atacama Desert? The Atacama receives virtually no rainfall on average per year.
The Atacama desert is the driest place in the world and it has 0.04in of rainfall a year. This is equal to 1millemeter.
The town of Calma, Chile in the Atacama Desert has never had rain.
The driest desert is Antarctica with the Atacama a close second. The Atacama is a rain shadow desert. The Andes Mountains block moisture from the Amazon Basin and the Atlantic from crossing so no rain falls in the Atacama.
Atacama
There is no "Nimbi Desert.' Were you referring to the Namib Desert?
Rain is very rare in the Atacama Desert. Some areas have not measured any rainfall in historic times.
A desert receives less than 10 inches of rain per year. Some deserts, such as the Atacama (a rain shadoe desert), receive virtually no rainfall.
The Atacama Desert in northern Chile.The Atacama Desert
Both of them owe their existence to the Andes Mountains and both are high plateaus between two mountain ranges.The Altiplano is much colder than the Atacama Desert.The Altiplano receives more precipitation than the Atacama Desert.The Altiplano has considerably more vegetation than the Atacama Desert.The Altiplano has a much higher average elevation than the Atacama Desert.
The Sahara Desert is hotter than the Atacama Desert, it's larger than the Atacama Desert and it has more life, but the Atacama Desert is much drier. The Atacama Desert is the driest place on Earth, with an average of less than a millimetre of the rain.
Your description fits either the Atacama Desert or the Antarctic Desert. There are parts of the Atacama that have gone more than 400 years without a drop of rain.