Atar has a hot desert climate (Köppen climate classificationBWh) typical of the Sahara Desert, south of the tropic of Cancer. The weather is usually very hot, very sunny and very dry but it can be overcast sometimes. The annual average temperature is close to 30 °C (86 °F), meaning that excessive heat persists year-round. The annual mean rainfall amount is very low, averaging no more than 35 mm and it mainly falls in August and in September while the sunshine duration is high, at over 3,540 h of bright sunshine yearly.
Source 2: Étude méthodologique pour l'utilisation des données climatologiques de l'Afrique tropicale (French document for sunshine hours only) [4]
Tourism
Today, the Atar is best known to outsiders as an entryway for tourists to visit the ruins of the ancient Moorish cities of Ouadane and Chinguetti. It was a key stop in the world's longest off-road race, the Paris Dakar Rally, held every January.
Small business sector
The "samaras" (from Arab smela : sole) are made in Atar and well known in Mauritania. It's a leather sole with straps.
Military
In 2012, an air force school was founded in Atar to train pilots and crew for the Military of Mauritania.[5]
^Scheffel, Richard L.; Wernet, Susan J., eds. (1980). Natural Wonders of the World. United States of America: Reader's Digest Association, Inc. p. 42. ISBN0-89577-087-3.