September in Mostaganem averages a daily high of 29°C with nights around 18.2°C. Expect roughly 4.3 wet days totalling 21.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Mostaganem is April–June.
Based on MOSTAGANEM, AG (5.9km), 1995–2024. 16 years of September data.