The Grandes Marées Festival will take place in Jullouville from July 19 to 27, 2025. It will host around thirty artists spread across three stages over eight days.

Better known as Jazz en Baie, this festival changed its name in 2019, after its 10th edition.
The festival is now called Festival Grandes Marées. However, apart from its name, nothing has changed.
This event takes place at the end of July, and is held over several days, in the Bay of Mont Saint-Michel, between Granville and Avranches.
In all, more than a hundred artists have graced the festival’s stages over the years: Selah Sue, Mélodie Gardot, Keziah Jones, Bernard Lavilliers, Jimmy Cliff, Thomas Dutronc, Gregory Porter, Imany, Stéphane Eicher, Charlie Winston, Maurane, Michel Jonasz, Eagle Eye Cherry, Hocus Pocus, Caravan Palace, Pink Martini, Kyle Eastwood, Popa Chubby …