Chamonix - When to Visit

When to Visit Chamonix

Climate guide & best times to travel

Monthly Climate Data for Chamonix Average temperature and rainfall by month Climate Overview -12°C -2°C 8°C 18°C 28°C Rainfall (mm) 0 64 129 Jan Jan: 2.0°C high, -7.0°C low, 94mm rain Feb Feb: 5.0°C high, -6.0°C low, 84mm rain Mar Mar: 8.0°C high, -3.0°C low, 86mm rain Apr Apr: 12.0°C high, 0.0°C low, 89mm rain May May: 17.0°C high, 4.0°C low, 122mm rain Jun Jun: 21.0°C high, 7.0°C low, 130mm rain Jul Jul: 23.0°C high, 9.0°C low, 119mm rain Aug Aug: 23.0°C high, 8.0°C low, 127mm rain Sep Sep: 19.0°C high, 6.0°C low, 104mm rain Oct Oct: 14.0°C high, 2.0°C low, 117mm rain Nov Nov: 7.0°C high, -2.0°C low, 102mm rain Dec Dec: 2.0°C high, -5.0°C low, 109mm rain Temperature Rainfall
Chamonix sits in a high-Alpine valley at just over 1,000 m, so the air stays knife-sharp even in midsummer and snowflakes can swirl in any month. Winters stretch long and predictably white; January and February serve the driest, colldest spells, good for skiing but brutal on exposed skin. Spring creeps in reluctantly: snow still grips north-facing slopes in May while the valley floor exhales the scent of thawing earth and fresh-cut grass. July and August climb to comfortable hiking heat. Yet afternoon clouds often brew brief, thunderous bursts that cannon off granite walls. Autumn tips fast toward freeze-up; September dawns may feel mild. But by November wood-smoke drifts from chimneys and the first serious dumps usually coat the ski runs. Rainfall, or its frozen twin, is modest next to lower Alpine towns: about 100 mm a month in summer and around 70 mm in mid-winter, most of it falling as feather-light powder that bounces off your jacket with a faint hiss. Humidity lingers near 70 % year-round, giving the air that thin, dry snap that makes both sun and shade feel sharper. Storms spin in from the north-west, so the Aiguilles vanish behind swirling cloud curtains, then reappear gleaming white against cobalt skies once the wind drops. The takeaway: pack layers, expect changeability, and treat every blue-sky window as fleeting.

Best Time to Visit

Recommended timing for different travel styles.

Beach & Relaxation
Forget sand. Swap it for alpine lake lounging, late June to early September when Lac des Gaillands warms enough for a quick, bracing plunge.
Cultural Exploration
May and September hand you quiet museums, open cafés, and walking tours minus the ski-boot crowds, plus golden light on the baroque churches in nearby Vallorcine.
Adventure & Hiking
Mid-July through mid-September keeps most high trails snow-free; for mountaineering, April, June gives firmer snow bridges and quieter huts.
Budget Travel
Late October and early November, lifts closed, snow patchy, hotels slash rates, and your footsteps echo down empty streets.

What to Pack

Essentials and seasonal recommendations for Chamonix.

Year-Round Essentials
Sunglasses Category 4 lenses
Snow glare is fierce even in May and September.
Collapsible water bottle
The dry air dehydrates faster than you'd expect.
High-SPF lip balm
Windburn at altitude cracks lips within hours.
Microfiber towel
Hut blankets can feel damp; a quick-dry towel helps.
Power bank
Cold drains phone batteries before you finish the cable-car ride.
Spring (Mar-May)
Clothing
Soft-shell jacket, Fleece mid-layer, Convertible hiking trousers
Footwear
Waterproof approach shoes with aggressive tread
Accessories
Sun hat, Light gloves
Layering Tip
Think onion: peel to base layer by noon, pile everything back on at 4 pm when shade knocks the temperature down.
Summer (Jun-Aug)
Clothing
Moisture-wicking T-shirts, Light trekking pants, Breathable rain shell
Footwear
Ventilated hiking boots
Accessories
Buff (dusty trails), Compact umbrella for sudden showers
Layering Tip
Carry a wind-shirt; valley heat vanishes the moment clouds gather.
Autumn (Sep-Nov)
Clothing
Insulated vest, Merino long-sleeves, Water-resistant trousers
Footwear
Mid-cut boots for early snow
Accessories
Wool beanie, Thin touchscreen gloves
Layering Tip
Start wrapped up, strip to shirt sleeves in afternoon sun, then pull it all back on after sunset.
Winter (Dec-Feb)
Clothing
Down parka, Thermal base layers, Insulated ski pants
Footwear
Double-boot system if heading high, single insulated for town
Accessories
Balaclava, Glacier-rated sunglasses, Chemical hand-warmers
Layering Tip
Synthetic next to skin, fleece, then puff - leave cotton at home.
Plug Type
Type C/E (two-round-pin)
Voltage
230V
Adapter Note
Most UK/US travellers need both plug adapter and voltage converter for 120 V appliances.
Skip These Items
Beach towel (rent at pools) Heavy guidebook (apps work offline) Hair dryer (hotels provide)
Full Packing Checklist

Interactive checklist with shopping links for every item you need.

View Chamonix Packing List →

Month-by-Month Guide

Climate conditions and crowd levels for each month of the year.

January

Hard-crusted snow, alpenglow on the Aiguille du Midi, and a dry cold that squeaks underfoot. Ski queues coil around Place du Mont-Blanc, yet off-piste stays silent until late morning.

High 1°C (34°F)
Low -7°C (19°F)
Rainfall 70 mm (2.8 in)
Crowds High
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February

Brilliant sunshine alternates with sudden white-outs; the snowpack settles, making steeps irresistible. Village bars smell of hot chocolate and damp wool.

High 3°C (37°F)
Low -6°C (21°F)
Rainfall 65 mm (2.6 in)
Crowds High
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March

Dawns start icy. But midday brings the soft, sticky snow locals call 'soupe'. Lower slopes brown at the edges while upper bowls still throw cold smoke.

High 7°C (45°F)
Low -3°C (27°F)
Rainfall 80 mm (3.1 in)
Crowds Medium
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April

Spring storms roll through, dumping wet cement that freezes overnight. You might ski in a T-shirt at noon, then scrape frost off your windshield by dusk.

High 11°C (52°F)
Low 1°C (34°F)
Rainfall 90 mm (3.5 in)
Crowds Low
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May

The snow line retreats uphill daily, uncovering muddy trails scented with wild thyme. Clouds loiter at the valley mouth. Yet high ridges often spear into clear sky.

High 16°C (61°F)
Low 5°C (41°F)
Rainfall 100 mm (3.9 in)
Crowds Low
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June

Lush pastures buzz with bees. Morning dew pearls on cable-car windows. Afternoon thunder cracks off the Drus, sending hikers scurrying to tree line.

High 20°C (68°F)
Low 8°C (46°F)
Rainfall 110 mm (4.3 in)
Crowds Medium
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July

Warmest month yet rarely hot, good for rock routes on the Aiguilles Rouges. Daylight lingers past 21:30, the air laced with barbecue and pine resin.

High 23°C (73°F)
Low 10°C (50°F)
Rainfall 105 mm (4.1 in)
Crowds High
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August

Holiday crowds peak. Yet sunrise on the Mer de Glace still feels solitary if you ride the first lift. Late storms can hurl graupel that rattles like ball bearings.

High 22°C (72°F)
Low 10°C (50°F)
Rainfall 110 mm (4.3 in)
Crowds High
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September

Shadows turn razor-sharp, larch needles bronze, and marmot whistles puncture the stillness. First snow usually powders 3,000-metre summits mid-month.

High 18°C (64°F)
Low 7°C (45°F)
Rainfall 95 mm (3.7 in)
Crowds Medium
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October

Golden larch reflections in Lac Bleu, then the curtain drops: lifts shut, clouds sink, wood-smoke threads through empty streets. Night frost becomes routine.

High 13°C (55°F)
Low 3°C (37°F)
Rainfall 85 mm (3.3 in)
Crowds Low
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November

A thin snow crust coats the valley floor, soon churned to brown slush by tractors. Hotels dangle off-season deals while guides tinker with gear for the coming rush.

High 6°C (43°F)
Low -1°C (30°F)
Rainfall 75 mm (3.0 in)
Crowds Low
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December

Christmas lights flicker against packed-snow walls. Carols echo under the arched walkways. Early-season storms can stall. But when they hit, the town snaps straight into midwinter.

High 2°C (36°F)
Low -5°C (23°F)
Rainfall 70 mm (2.8 in)
Crowds Medium
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