June – September

Chamonix
in Summer

The Alps at their finest — wild trails, glaciers, soaring ridgelines, and long golden evenings.

Summer Season

Why Summer
is Special

When the snow retreats, Chamonix transforms into one of Europe's greatest outdoor playgrounds. Wildflowers carpet the lower slopes, the cable cars run to altitude, and hundreds of kilometres of marked trails open up across the massif.

The valley buzzes with hikers, trail runners, climbers, and paragliders from mid-June onwards. Average July temperatures in the valley sit at a comfortable 20°C, while the upper mountain remains cool and breezy — perfect for long days in the mountains.

Summer hiking above Chamonix with Mont Blanc views

On Foot

Top Hikes
Near Chamonix

From gentle valley walks to serious alpine routes, Chamonix has over 310km of marked summer trails.

Lac Blanc

⏱ 4–5 hours ↑ 750m gain 🟡 Moderate 📍 From La Flégère

Arguably the most iconic hike in the Chamonix Valley. A high-altitude lake at 2,352m that perfectly reflects the Mont Blanc massif on a calm day. Take the La Flégère cable car to start high, then it's a 2-hour climb to the refuge and lake. Unmissable.

Grand Balcon Nord

⏱ 3–4 hours ↑ 200m gain 🟢 Easy–Moderate 📍 Plan de l'Aiguille

One of the finest ridge walks in the Alps — a balcony trail with unobstructed views of the entire Mont Blanc massif and the Mer de Glace glacier stretching below. Start from Plan de l'Aiguille (mid-station of the Aiguille du Midi cable car) and walk to Montenvers.

Tour du Mont Blanc (TMB)

⏱ 7–11 days ↑ 10,000m total 🔴 Challenging 📍 Starts in Les Houches

The world's most famous long-distance hiking trail — 170km through France, Italy, and Switzerland. The TMB passes through stunning valleys, over high mountain passes, and stops in charming Alpine villages. Most hikers do it in one direction (anti-clockwise), staying in refuges or gîtes.

Aiguillette des Posettes

⏱ 3 hours ↑ 650m gain 🟡 Moderate 📍 Argentière

A superb ridge walk above the Argentière glacier giving 360° panoramas including Mont Blanc, the Aiguilles Rouges, and the Swiss border peaks. Far quieter than the busier Lac Blanc trail and just as rewarding.

Beyond Hiking

More Summer
Adventures

🪂

Paragliding

Tandem paragliding from Planpraz (1,999m) over the Chamonix Valley is one of Europe's top flight experiences. Flights last 20–30 minutes and land in Chamonix town. No experience needed.

🧗

Via Ferrata

Chamonix has several excellent via ferrata routes for those who want to climb rock faces safely with cables and iron rungs. The Gaillands route is perfect for beginners; the Vallorcine via ferrata is more serious.

🚵

Mountain Biking

The valley has a growing MTB scene with dedicated trails ranging from flowy forest descents to technical enduro routes. The Les Houches bike park is excellent for downhill riding.

🏃

Trail Running

Chamonix hosts the Ultra-Trail du Mont Blanc (UTMB) every August — the world's most famous trail race. The valley trails are exceptional for running, with lift access to gain altitude quickly.

🧊

Glacier Experiences

Visit the Mer de Glace — France's largest glacier — by the Montenvers rack railway. Walk into an ice cave carved into the glacier and learn about glacial retreat from interpretive displays.

🏔️

Mountaineering

Chamonix is the world capital of alpinism. From beginner courses on the Mer de Glace to the full Mont Blanc summit ascent, the town's guide companies (COMPAGNIE DU MONT BLANC) offer courses at all levels.

Summer FAQs

Your Summer
Questions Answered

When is summer in Chamonix?
Summer in Chamonix runs from mid-June to mid-September. July and August are the warmest and busiest months. Valley temperatures average 18–24°C in midsummer, while higher trails can be cold even in July — always bring layers.
What is the Tour du Mont Blanc?
The Tour du Mont Blanc (TMB) is a 170km long-distance trail circumnavigating the Mont Blanc massif through France, Italy, and Switzerland. It crosses 7 mountain passes with 10,000m total elevation gain. Most hikers complete it in 7–11 days, staying in refuges or gîtes. It's one of the world's great hikes.
Can you hike to the top of Mont Blanc?
Yes, but it requires serious alpine experience. The standard Voie Normale route via the Goûter Hut takes two days and involves glacier travel, crampons, ice axe, and exposure to extreme altitude (4,808m). A certified IFMGA mountain guide is strongly recommended. The main season is July–August.
What is the best day hike in Chamonix?
Lac Blanc and the Grand Balcon Nord are consistently rated the top two day hikes. Lac Blanc (from La Flégère cable car) offers the famous Mont Blanc reflection in the lake. The Grand Balcon Nord (from Plan de l'Aiguille) is a spectacular balcony walk with continuous massif views. Both are moderate difficulty and suitable for fit walkers.
Do I need hiking boots in Chamonix?
For lower valley and forest trails, good trainers are fine. For anything above 2,000m — including Lac Blanc, Grand Balcon Nord, and all TMB routes — proper waterproof hiking boots with ankle support are strongly recommended. Many trails involve loose rock and can be wet even in summer.

Plan Your Summer Trip

Find the best place to stay and the easiest way to get there.

Where To Stay Getting There