The city's name seems to date back to the period of the Vandal Kingdom in pre-Islamic North Africa: the Vandals, in fact, were of Arian faith. It could also be a reference to Persian settlers from the Islamic invasion of the Maghreb as Persians refer to themselves as "Aryan".
In Ariana, the climate is warm and temperate. In winter there is much more rainfall than in summer. The Köppen-Geiger climate classification is Csa. The average annual temperature in Ariana is 18.0 °C (64.4 °F). About 449 mm (17.68 in) of precipitation falls annually.