Generally speaking, Morocco and specifically Fez is still a bit more conservative than you might be used from Europe, therefore too "open" or too short dresses would be non-appropriate.
We appreciate therefore you classy appearance for any occasion ;)

Climate - Fez in September is still very warm around 25 degrees during the day, but can be sometimes a bit fresh in the evenings, so please make sure you have a little pullover with you (especially the ladies).

Friday Evening
Ladies: Classy dresses (dress to impress) and black tie/smoking for the Gentlemen

Saturday Evening
Your local traditional dresses (or just colorful) - as per below a beautiful Norwegian dress and German Lederhosen perfectly presented by Hedda & Bjoern.