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🍁 What’s On in Chamonix This September 2025

September in Chamonix offers mild late-summer weather, fresh alpine air, and a variety of events and activities. Whether you’re a trail runner, culture enthusiast, or simply seeking the serene beauty of the Alps, here’s your guide to the must-see happenings this month.

🏃‍♂️ Trail des Aiguilles Rouges – September 28

One of the valley’s premier trail running events, the Trail des Aiguilles Rouges offers three challenging courses:

TAR: 51 km with 3,700 m elevation gain
Small TAR: 15 km with 1,300 m elevation gain
Mini TAR: 9 km with 625 m elevation gain

Runners traverse the stunning Aiguilles Rouges massif, offering panoramic views of Mont Blanc. chamonix.net

🛍️ Chamonix Summer Street Sale – September 6–7

Celebrate the end of summer with the Grande Braderie in Chamonix’s town center. From 10:30 AM to 7:00 PM, local merchants offer discounts on a variety of goods, making it a perfect opportunity to pick up souvenirs or enjoy the lively atmosphere. chamonix.net

🏛️ European Heritage Days – September 20–21

Discover Chamonix’s rich cultural heritage during the European Heritage Days. Many local sites, including museums and historical buildings, open their doors to the public for free, offering guided tours and special exhibits. SeeChamonix.com

🧺 Les Houches Farmers’ Market – Every Wednesday

From 2:00 PM to 7:00 PM at The Chibon Bread Farm, this market showcases local produce, cheeses, meats, and artisanal goods. It’s a great way to experience the region’s flavors and support local farmers. SeeChamonix.com

🌤️ Weather Outlook

September in Chamonix typically sees daytime temperatures ranging from 10°C to 20°C, with cooler evenings. It’s an ideal time for hiking, with clear skies and vibrant autumn colors beginning to emerge.

🏔️ Seasonal Lift Closures

Please note that some mountain lifts will close for maintenance from September 22 to October 17. It’s advisable to check the latest schedules before planning your mountain excursions. SeeChamonix.com

For more detailed information and updates on events, visit Chamonix.net or SeeChamonix.com.

Enjoy your September in Chamonix!

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