The winter sales follow a standing national rule. The commerce code lets each period run from three to six weeks. The economy ministry says the order of May 27, 2019 fixes the length at four weeks, starting at 8:00 a.m. on the second Wednesday of January, or the first Wednesday if that second Wednesday falls after the 12th.
In 2027, January 1 is a Friday, so the Wednesdays are January 6 and January 13. January 13 is after the 12th, which moves the start to Wednesday, January 6, at 8:00 a.m. Four weeks runs through Tuesday, February 2. Ministry pages read on October 25, 2026 state the rule and do not print a separate 2027 calendar. Treat those dates as what the rule produces, and check the shop if your plan depends on opening morning.
January 1 is a public holiday. The Louvre, Versailles, the Catacombs, and Sainte-Chapelle close. Orsay is not on that same standard list, so confirm it. The Eiffel Tower has stayed open on January 1 in past years. Summit maintenance for 2027 is TBC. In 2026 the summit was closed January 5 to February 6.
On the education ministry’s calendar for zone C (Paris), the Christmas break starts after class on December 19, 2026, and classes resume on the morning of January 4, 2027. The first weekend is still the holiday. Fares for 2027 were not posted when we checked. Through December 31, 2026 a Métro-Train-RER ticket is €2.55 and a bus-tram ticket is €2.05.