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The desert climate or arid climate (in the Köppen climate classification BWh and BWk) is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert climates are dry and hold little moisture, quickly evaporating the already little rainfall they receive.
Saudi Arabia's Köppen climate classification map.. The climate of Saudi Arabia is marked by high temperatures during the day and low temperatures at night. The country follows the pattern of the desert climate, with the exception of the southwest, which features a subtropical highland climate and a semi-desert climate.
Mecca features a hot desert climate. Mecca retains its hot temperature in winter, which can range from 18 °C (64 °F) at night to 30 °C (86 °F) in the day. Summer temperatures are extremely hot, often being over 40 °C (104 °F) during the day, dropping to 30 °C (86 °F) at night. [1]
In time, bacteria that live on the surface of the stones accumulate a film of minerals and clay particles, forming a shiny brown coating known as desert varnish. [ 62 ] Other non-sandy deserts consist of exposed outcrops of bedrock , dry soils or aridisols , and a variety of landforms affected by flowing water , such as alluvial fans , sinks or ...
A hot desert climate tends to have two seasons: a long, hot summer and a shorter, mild winter. Phoenix has four months (June-September) when the historical average high temperature is 100 degrees ...
Some mountainous locations in Sinai, such as Saint Catherine, have cooler night temperatures, due to their high elevations. It rarely snows in the Sinai mountains, but it almost never snows in the cities of Giza, Cairo, and Alexandria. For example, in December 2013, Cairo received a single overnight snowfall for the first time since 1899.
The Sahara Desert features a hot desert climate (Köppen climate classification BWh).The Sahara Desert is one of the driest and hottest regions of the world, with a mean temperature sometimes over 30 °C (86 °F) and the average high temperatures in summer are over 40 °C (104 °F) for months at a time, and can even soar to 47 °C (117 °F).
High desert regions typically have the greatest diurnal-temperature variations, while low-lying humid areas near the shores (tropical, oceanic, and arctic) typically have the least. Large cities (urban heat islands) also tend to have a lowed diurnal temperature variation than surrounding areas.