Night markets are everywhere in Sanary, Bandol, Aix-en-Provence and Marseille. In Provence, it's a real tradition, and many towns, as well as small villages, organise their own summer markets.
With so much to do during the day - beach, swimming, sport, etc. - and the heat of summer, evening markets are a well-deserved cool-down after a long, sunny day.
Typically, the evening markets are an illustration of the rhythm of life in the south: you get busy in the morning, have a siesta in the afternoon and wake up in the evening to start a second day.