Montesson

Carriages, confetti and fireworks: this historic festival returns to Montesson (78) today.

Floats, confetti, a funfair and fireworks: the Fête du Pâté à la Carmen returns to Montesson on 19 and 20 September 2026. A popular Yvelines event that preserves a local tradition dating back more than a century and a half.

This sprawling flea market, held only twice a year, returns this weekend in Yvelines.

More than 300 exhibitors are expected at this large flea market, a favorite with bargain-hunters in Yvelines. The event returns to the Montesson Carrefour car park on Sunday, August 9, 2026.

Music Day 2026 in Montesson (78): schedule adjusted for heatwave

The Fête de la Musique 2026 remains in Montesson, but the program is adjusted due to the heat. On Saturday, it kicks off at 7 p.m.; Créa’danse is canceled, and Sunday’s concert has been moved.

Earth Festival 2026 in Montesson (78): Flavor Market, Gardening Workshops & Educational Farm

À Montesson (78), le printemps se vit les mains dans la terre et le nez au grand air. The Earth Festival returns on Sunday, May 24, 2026, to Parc Départemental de la Boucle de Montesson, with its market of local producers, an educational farm, nature workshops, and family activities.

Le Vésinet, Chatou, Carrières-sur-Seine... artist studios open their doors in May 2026.

On the occasion of the Parcours d’art de la Boucle de Seine, on May 30–31, 2026, nearly sixty artist studios and craftspeople will open their doors to the public. From Carrières-sur-Seine to Chatou, via Croissy-sur-Seine, Houilles, Le Vésinet and Montesson, this free art-filled excursion invites visitors to discover the behind-the-scenes of creation along the charming lanes of the Yvelines (78).

The Montesson Christmas Market (78): craftsmen, toboggan run and entertainment for all the family!

The Montesson Christmas Market will be held on Saturday, December 6, 2025 in the Parc des Sophoras for a magical day! A toboggan run, Santa Claus, stilt-walkers, creative workshops, face-painting and treats are all on the program. And don't forget the launch of the town's illuminations by Madame le Maire at 6pm!

Octobre Rose 2025: Les Foulées Roses, a 5km solidarity run/walk in Montesson (78)

On track for Pink October! In Montesson, solidarity kicks off with a pair of sneakers. On Sunday October 12, 2025, the Yvelines town launches the 2nd edition of the Foulées Roses, a 5 km walk/run, with all proceeds going to the Institut Gustave Roussy.

Halloween 2025: l'Antidote, a deadly murder party in Montesson departmental park (78)

Looking for a Halloween scare? On Saturday, October 25, 2025, plunge into the Loop de Montesson park (Yvelines) for a zombie-filled murder party.

Festival de l'Air 2025 in Montesson (78): hot-air ballooning, kites and free concert in October

The town of Montesson (Yvelines 78) will take to the skies for the 5th edition of the Festival de l'Air, free and open to all, on Saturday October 4, 2025. Between kites, hot-air balloons and aerial animations, young and old will (re)discover the town ... with their heads in the clouds.

Festival de l'Eau 2025 in Montesson (78): free sailing, pedal boats, craft market, ...

In Montesson, the Festival de l'Eau returns with a bang on Saturday June 7, 2025! On the banks of the Seine, this free event celebrates the richness of the river in this Yvelines (78) commune, with sailing tours, a craft market and games for children. A fresh, festive and 100% convivial day!

Vés' E.Sport 2025: the gaming and eSport event in Montesson (78)

Le Vésinet hosts the Vés' E.Sport on Sunday, March 16, 2025 at the Stade des Merlettes in neighboring Montesson. FC 25, Super Smash Bros and Mario Kart tournaments, entertainment and disability awareness are on the program for this free event open to all.

Paris-Nice, route and events on Monday March 10 from Montesson to Bellegarde

The Race to the Sun, the Paris-Nice, will set off this Monday, March 10 from the Yvelines towards the Loiret for 183.9 km. We tell you all about the day's route and start times.

Fête des Saveurs en Plaine 2024 in Montesson (78): local produce market, flowers and workshops

The Fête des Saveurs en Plaine is coming to the Parc départemental de la Boucle de Montesson (78) for its 3rd edition! Coupled with the town's Festival de la Terre, the event takes place on Sunday, May 5, 2024, with a fresh produce and crafts market, a flower market, workshops and even a show!

Fête de la Salade Nouvelle 2024 in Montesson (78): field walks and tastings

The Fête de la Salade Nouvelle, a gourmet, country-style celebration, takes place on April 28, 2024! Organized by the Association Plaine d'Avenir 78, this 12th edition invites you to an escapade in the heart of the plains of Montesson (78). Join local farmers and beekeepers on this bucolic hike, and discover the treasures of our terroir in a friendly, festive atmosphere!