Geography
Main article: Geography of Saudi ArabiaClimate
Map of Saudi Arabia
The Kingdom occupies about 80 percent of the Arabian peninsula. In 2000 Saudi Arabia and Yemen signed an agreement to settle their long-running border dispute.[7] A significant length of the country's southern borders with the United Arab Emirates, and Oman, are not precisely defined or marked, so the exact size of the country remains unknown. The Saudi government's estimate is 2,217,949 km² (856,356 sq mi). Other reputable estimates vary between 1,960,582 km²[8] (756,934 mi) and 2,240,000 km² (864,869 mi²). The kingdom is commonly listed as the world's 14th largest state.
Saudi Arabia's geography is varied. From the western coastal region (Tihamah), the land rises from sea level to a peninsula-long mountain range (Jabal al-Hejaz) beyond which lies the plateau of Nejd in the center. The southwestern 'Asir region has mountains as high as 3,000 m (9,840 ft) and is known for having the greenest and freshest climate in all of the country, one that attracts many Saudis to resorts such as Abha in the summer months. The east is primarily rocky or sandy lowland continuing to the shores of the Persian Gulf. The geographically hostile Rub' al Khali ("Empty Quarter") desert along the country's imprecisely defined southern borders contains almost no life
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Desert view in Saudi Arabia. The reddish color of sand and rocky hills in the background indicate this image was taken in the middle/western part of the kingdom
Mostly uninhabited, much of the nation's landmass consists of desert and semi-arid regions, with a dwindling traditional Bedouin population. In these parts of the country, vegetation is limited to weeds, xerophytic herbs and shrubs. Less than two percent of the kingdom's total area is arable land. Population centers are mainly located along the eastern and western coasts and densely populated interior oases such as Hofuf and Buraydah. In some extended areas, primarily the Rub' al-Khali and the Arabian Desert, there is no population whatsoever, although the petroleum industry is constructing a few planned communities there. Saudi Arabia has no permanent year-round rivers or lakes; however, its coastline extends for 2,640 km (1,640 mi) and, along the Red Sea, harbors world-class coral reefs, including the Gulf of Aqaba.
Native animals include the ibex, wildcats, baboons, wolves, and hyenas in the mountainous highlands. Small birds are found in the oases. The coastal area on the Red Sea with its coral reefs has a rich marine life.
Extreme heat and aridity are characteristic of most of Saudi Arabia. It is one of the few places in the world where summer temperatures above 50 °C (122 °F) have been recorded, with 51.1 °C (124 °F) being the highest temperature ever recorded in Saudi Arabia at Dhahran in 1956[9]. In winter, frost or snow can occur in the interior and the higher mountains, although this only occurs once or twice in a decade. The lowest recorded temperature is −12.0 °C (10.4 °F), recorded at Turaif. The average winter temperature ranges from 8° to 20 °C (47° to 68 °F) in January in interior cities such as Riyadh and 19° to 29 °C (66° to 83 °F) in Jeddah, on the Red Sea coast. The average summer temperature range (in July) is 27° to 43 °C (81° to 109 °F) in Riyadh and 27° to 38 °C (80° to 100 °F) in Jeddah. Nighttime temperatures in the central deserts can be famously chilly even in summer, as the sand gives up daytime heat rapidly once the sun has set. Annual precipitation is usually sparse (up to 100 mm or 4 in in most regions), although sudden downpours can lead to violent flash floods in wadis. Annual rainfall in Riyadh averages 100 mm (4 inches) and falls almost exclusively between January and May; the average in Jeddah is 54 mm (2.1 in) and occurs between November and January.
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