September in Aïn Defla averages a daily high of 29.5°C with nights around 18.5°C. Expect roughly 5.1 wet days totalling 25.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Aïn Defla is April–June.
Based on MILIANA, AG (24.1km), 1995–2024. 20 years of September data.