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The Sahara desert globally has a low to an extremely low cloud cover since the air is very dry. The sunshine duration varies from 3,000 hours to 4,000 hours annually (and even more in the sunniest desert areas), which means the cloudy days are scarce and can only occur on localized days. The least cloudy part of the Sahara desert is the Eastern desert (desert parts of Libya, Egypt, Chad, Sudan and Niger), where some areas would record more than 4,000 hours of bright sunlight per year. Anyway, the hyperarid zone of the desert (the zone which receives between 0 mm and 50 mm of precipitation on year-based average), located in the core of the Sahara records at least 3,500 hours of sun everywhere.

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11y ago

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