September in Jaén averages a daily high of 28°C with nights around 17.6°C. Expect roughly 3.9 wet days totalling 28.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Jaén is April–June.
Based on JAEN, SP (1.8km), 1995–2024. 30 years of September data.