Both Boulogne-sur-Mer and Calais hold annual Christmas Markets and are easily accessible for a day-trip or shortbreak.
Calais (62 Pas-de-Calais, Hauts de France)h olds its Christmas market – 7 – 22 December 2019 in Place du Théâtre.
On offer are all the usual festive attractions, including mulled wine, pain d’épices, fire-dancers, puppets, jazz etc.
Calais by train/Eurostar with Rail Europe
For details of Boulogne‘s Christmas Market see Boulogne’s Christmas Market
Sadly of course, there are no longer any direct ferries to Boulogne, but Calais and the Channel Tunnel are only about 30 minutes away by car.