What is the yearly average rainfall in the Sahara?

Answer 1

Half of the Sahara receives less than 2 centimetres (0.79 in) of rain a year, with the rest receiving up to 10 cm (3.9 in) a year. The rainfall happens very rarely, but when it does it is usually torrential when it occurs after long dry periods (which can last for years).

Answer 2

The average annual rainfall varies from 955 mm at Tangiers and 430 mm at Casablanca to 280 mm at Essaouira and to 102 mm in the Sahara.

Answer 3

From 254 mm (10 inches) to 100 mm (4 inches) depending on the region.