Transportation in Paris and Île-de-France: this week’s disruptions due to snow and black ice

Public transportation in Paris and Île-de-France is facing significant disruptions during the first week of operations, from January 5 to 11, 2026. Nighttime service will be heavily impacted on RER, Transilien, and tramway lines operated by RATP and SNCF, due to ongoing maintenance work, as well as weather conditions like snow and ice. Here's what you need to know.

The start of the day was particularly challenging for public transportation in Paris and Île-de-France this Tuesday, January 6, 2026. After two weeks of Christmas break, the recovery was underway amid snow and ice, with major disruptions right from the early hours. Four centimeters of snow fell in Paris on Monday, causing record traffic jams of 1,020 kilometers by late afternoon. The freezing temperatures, ranging from -7 to -3 degrees Celsius, turned the roads into icy skating rinks, prompting several bus networks to halt services. The RATP and SNCF operated trains overnight to prevent freezing on the tracks. In an update issued at 7 a.m. this Tuesday, the RATP reports that all metro, RER, and tram lines are operating normally, but only about thirty bus routes are currently running. Here’s an overview of the situation.

Which Metro and Tram Lines Are Affected This Week?

On the Paris metro network, only one line will be affected this week:

Line 12: On Sunday, January 11, 2026, starting at 10 p.m., train services will be suspended along the entire line for modernization work. If you plan to go out that evening, please plan ahead to account for the complete shutdown.

On the tramway front, unfortunately, prolonged disruptions persist:

T1: Train services remain halted between Asnières-Quatre Routes and Gare de Saint-Denis, with disruptions extending across the rest of the line following damage caused by a third party at L'Île-Saint-Denis. Restoring circulation is not expected before summer 2026.
T2: Until the end of February 2026, train services are suspended between Porte de Versailles and Suzanne Lenglen due to major modernization works. To travel between Suzanne Lenglen and Porte de Versailles, pedestrians should use the Balard station on T3a.

What’s the latest update for Wednesday, January 7?

According to a statement from Île-de-France Mobilités, "if the snow persists overnight, significant disruptions are expected, mainly affecting transportation that relies on the road network."

Some 1,900 bus and coach lines across Île-de-France could face significant disruptions or even come to a halt entirely. IDFM has indicated that decisions will be made based on actual traffic conditions to ensure the safety of both drivers and passengers. As of this Tuesday afternoon, the network is operating at over 85% capacity.

In the outer suburbs, the decision is already clear: school transportation will not be provided due to prefectural orders.

What maintenance is scheduled for the RER train network for the rest of the week?

Once the weather disturbances subside, the RER will resume its scheduled evening operations:

RER B: From Monday to Friday until May 28, train services will be suspended between Châtelet-Les Halles and Aéroport Charles de Gaulle 2-TGV, as well as between Mitry-Claye and Aulnay-sous-Bois due to maintenance work. Be cautious if you have an early flight.
RER C: On Sunday, January 11, 2026, from 11:45 PM, service will be suspended between Paris Austerlitz and Dourdan/Saint-Martin-d'Étampes, with substitute buses in place. During weekdays, from 11 PM onwards, trains will be interrupted between Gare d'Austerlitz and Juvisy, Gare d'Austerlitz and Pont de Rungis Aéroport d'Orly, Gare d'Austerlitz and Saint-Martin-d'Étampes, Javel and Saint-Quentin-en-Yvelines-Montigny-le-Bretonneux, as well as Versailles Château Rive Gauche and Javel.
RER D: From Monday to Friday starting at 9:30 PM, services will be halted between Creil and Orry-la-Ville-Coye with replacement buses. During weekdays from 11:15 PM, trains will be interrupted between Gare de Lyon and Corbeil-Essonnes/Melun. On Saturday and Sunday, January 10 and 11, from 10:50 PM to 8:50 AM, services will be suspended between Creil and Gare du Nord.
RER E: From January 5 to February 13 inclusive, on weekdays from 8:30 PM, trains will be stopped between Nogent-Le Perreux and Tournan. Additionally, from January 5 to January 30, weekdays from 10:45 PM, service will be interrupted between Nanterre-La Folie and Chelles-Gournay. On Saturday and Sunday, January 10 and 11, from 10:30 PM, train services will be halted between Nanterre-La Folie and Tournan.

Which Transilien lines are affected by construction work this week?

The Transilien network is experiencing significant disruptions this week due to overnight maintenance work on almost all lines:

Line H: From Saturday, January 10 at 10:50 PM until Monday, January 12 at 8:50 AM, train services will be suspended between Gare du Nord and Ermont-Eaubonne due to maintenance work, on top of the weather disruptions experienced this Tuesday.
Line J: From January 5 to January 23 inclusive, weekday evening services will be disrupted from 9:40 PM between Gare Saint-Lazare and Mantes-la-Jolie via Poissy. Similar cancellations will occur at 9:15 PM between Issou-Porcheville and Mantes-la-Jolie.
Line L: From January 5 to February 6 inclusive, weekday services after 10:10 PM will be suspended between La Défense and Versailles Rive Droite/Saint-Nom-la-Bretèche Forêt de Marly.
Line N: From January 5 to January 23 inclusive, train services from Gare Montparnasse towards Mantes-la-Jolie will be halted from 10 PM onwards. Also, from 11 PM, services between Gare Montparnasse and Rambouillet will be affected.
Line P: From January 5 to February 27 inclusive, weekday evening services will be suspended starting at 7:45 PM between Gare de l'Est and Provins. Similar disruptions will begin at 8:30 PM between Gare de l'Est and Coulommiers, as well as between Gare de l'Est and Château-Thierry. Starting at 10:20 PM, services between Gare de l'Est and Meaux will also be impacted. On Saturday, January 10 and Sunday, January 11, services between Gare de l'Est and Coulommiers will be halted from 10:30 PM, with similar suspensions at 10:50 PM towards Meaux, and at 11 PM towards Château-Thierry.
Line R: From January 5 to January 16 inclusive, weekday services after 9:30 PM will be disrupted between Melun and Montereau via Héricy. Additionally, from 11:15 PM, services between Gare de Lyon and Montargis/Montereau via Moret-Veneux-les-Sablons will also be affected.
Line U: From January 5 to January 30 inclusive, the entire line will be closed during weeknights from 10 PM onward due to ongoing maintenance work. This represents almost a month of complete nightly closures.

How to Get Back on Track After the Snow Disruptions?

Another challenging day is expected in Île-de-France this Wednesday. Commuters are advised to limit their travel and check traffic conditions before heading out, as the region remains under orange alert. While the metro, RER, and tram services are operating normally thanks to proactive measures by RATP, the bus network will face significant disruptions, with many routes halted in the suburbs. Be sure to consult the apps Bonjour RATP and SNCF Connect for real-time updates, as conditions are changing hour by hour. Bus services are expected to gradually resume as road conditions improve. For the rest of the week, scheduled maintenance work mostly causes evening disruptions after 8 p.m.

In brief, the week from January 5 to 11, 2026, will be remembered for a notably challenging return to school and work amidst snowfall across the Paris region. The RATP and SNCF are continuing their scheduled maintenance works, including complete closures of the Transilien Line U each evening for nearly a month, and the Line 12 metro line on Sunday night. If you need to travel late into the night, consider using the Noctilien night bus lines. Best of luck navigating this turbulent start to the year!

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