August in Chamonix: What's on and weather

Chamonix's biggest summer event, the UTMB, and much more

Imprint: By Ana Hernández, Updated 25 June 2026

Peak season in Chamonix and the town becomes the trail running capital of the world.

August is one of the busiest months in Chamonix, with many events on the calendar to suit visitors of every age and ability, but of course one of the biggest talking points in the Chamonix summer schedule is the famous trail running race - Ultra Trail du Mont Blanc. Just be sure you've booked your accommodation!

Easily one of the best known ultramarathons in the world, now boasting seven events in its calendar, this week long trail running festival and its participants, supporters and spectators literally overrun the town. You will soon find you are never far from a trail runner, a banging cowbell or someone shouting 'allez allez allez'.

To entertain the masses there are a whole host of events in Chamonix and they don't all include a gruelling running race.

Read on for a look at what we like to do in resort throughout August.

What's the weather like in Chamonix in August?

Whilst average August temperatures sit at a low of 11°C and a high of 22°C, we have seen temperatures can really vary in the mountains in summer with occasional storms that roll in and heatwaves that bring a searing heat. Plus the UTMB week always seems to attract some crazy weather of some sort to additionally challenge the runners.

See our Summer Lift Passes

Things to do in Chamonix

Paragliding, or parapenting as the French say, is a good way to escape the packed pavements and busy mountain trails and to head up, literally, into the sky with a tandem flight. There are lots of companies who offer the service and it's a good opportunity to take a bird's eye view of the town and surrounding valley from the peace and tranquility of the skies above it. For a 20-minute flight, take off is usually from the Brévent cable car mid-station.

See our Activity Guide

Tandem Paragliding

Location
Chamonix

Discover the unforgettable sensation of flying high above the Chamonix-Mont-Blanc valley on a tandem paragliding adventure. Whether it’s your first time in the air or you’re craving an adrenaline-fuelled experience, each flight is designed to showcase the Alps from their most spectacular angle.
Ski Mont Blanc

Mont Blanc on skis is the ultimate way to reach the highest peak in western Europe. This is an epic end of ski-season challenge!
Discovery walks and mini-photoshoot

Location
Les Houches

An opportunity to get in the picture with Teresa Kaufman as your personal photographer, guide and story teller. This is the perfect activity accessible to everyone; children, adults, grandparents - easy walking, incredible scenery, a moment to share. Non-skiers will love it in the winter. An activity to experience with loved ones or to give as a gift.
Vallée Blanche private guide

Location
Chamonix

At the summit of the Aiguille du Midi you will find the Vallée Blanche!
Cinema VOX

Location
Chamonix

Chamonix's own Cinema VOX is situated right in the centre of town, slightly tucked back on the Place Balmat (main square in the centre). There are three recently refurbished screens equipped with digital 3D projectors show the latest French and International films, as well as a number of premieres and specialist mountain-sports films.
VerticAlp funiculars and train

Location
Le Chatelard

At the edge of the Franco-Swiss border lies the 'VerticAlp' experience, which is made up of a steep funicular, a panoramic train and a smaller funicular taking you up to the Emosson Dam.

August events in Chamonix

Chamonix hosts the world-famous Ultra Trail du Mont Blanc each summer, attracting thousands of elite and amateur runners for endurance races around the Mont Blanc massif. The resort also celebrates its mountaineering heritage during the Fête des Guides, featuring parades, markets, live music and family-friendly events honouring the valley’s long-standing guiding tradition.

Marathon du Mont-Blanc

Next event date
26 June 2026
Location
Chamonix

If you’re a fan of trail running then the Marathon du Mont Blanc is the ultimate challenge. The main event covers 42km and climbs over 2,000 metres, this high-altitude race is for the super-fit.
Farmer's market Les Houches

Next event date
1 July 2026
Location
Les Houches

Come and discover the produce of this local farm in Les Houches.
Arc'teryx Alpine Academy

Next event date
2 July 2026
Location
Chamonix

Intimate on-mountain clinics led by the best mountain guides and top class athletes.
Climbing World Cup

Next event date
10 July 2026
Location
Chamonix

Every year Chamonix hosts the IFSC Climbing World Cup, and some of the best climbers in the world descend on the resort for three days of fantastic climbing action.
Tour du Mont Blanc cycle race

Next event date
11 July 2026

Arguably one of the toughest cycling races around, the Tour du Mont Blanc sees riders tackling 330km and 8,300m of climbing and descents in just one day.
Tour des Fiz, Passy

Next event date
11 July 2026
Location
Chamonix

The Trail du Tour des Fiz consists of a variety of courses for all levels in the most stunning backdrop of the nature reserves of Passy and Sixt-Passy.