Tiaret has two different climates and is dominated by Csa.
|Hot-summer Mediterranean climate||34||Csa||Tiaret, Takhemaret, Rahouia, Sid Ali Mellal, Ain El Khadra|
|Cold semi-arid climates||30||BSk||Faidja, Sahari, Mahdia, Rechaiga, Hamadia|
In Tiaret, the climate is warm and temperate. The winter months are much rainier than the summer months in Tiaret. The climate here is classified as Csa by the Köppen-Geiger system. The average annual temperature is 15.5 °C | 59.9 °F in Tiaret. In a year, the rainfall is 472 mm | 18.6 inch.