PeakWindow/Chamonix-Mont-Blanc
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Showing this resort's typical peak window · closest airport GVA — adjust above
lively
Resort dossier

Chamonix-Mont-Blanc

FR·Haute-Savoie
Weeks 53–3

Typically -10.0°C · 37cm fresh / week · powder day 63% · mixed 36%

Top elev.
3842m
Base elev.
1035m
Pistes
170km
Lifts
46
Piste mix41km mapped
Green12%
Blue25%
Red30%
Black31%
Other2%
COMPOSITE SCORE
68
Snow84
Typically 150cm
Typical depth150cm
119cm182cm
Travel57
From your origin
Size80
Piste km, discounted for linked-area connectivity
Fit50
Vibe, terrain, activities
What to expect

What to expect in weeks 1–53

Based on 25 winters of weather data, modelled at ~2522m (not the village). Any single year can be very different.

Typically stormy, around -10.0°C, with 37cm of fresh snow over the week. Powder days hit 63% of the time. Other weeks run mixed.

Icy mornings
0.1 days/week
spring-like in 0% of years
Snow texture
Powdery
soft, easy turns
Typical wind
10.7 m/s
peaks to 31 m/s
Typical Freezing level
896 m
0°C isotherm
Powder days
63%
of years see 10cm+
Rain at base
1.5 days
per week
Storm
49%
of years
Bluebird
15%
of years
Thaw
0%
of years
Mixed
36%
of years
Climatology

What a season here looks like

Each track shows the typical range across 25 winters. The marker shows where your selected weeks sit.

Reliability60cm+
100%
Depth
165cm
Temperature
-10.0°C
Fresh snow
37cm
Snow line
896m
Wind
10.7 m/s

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Transfers

Transfers

AirportDriveTrain
Geneva (GVA)78 min150 min
Method & sources

The composite score weights snow reliability against the historical baseline, pulls in live conditions where available, then adjusts for how much hassle the trip actually is for your group.

  1. 01ERA5-Land hourly grid → daily SWE & snow depth at the resort cell.
  2. 02Bias-correct against ground stations (SLF / Météo-France nivôse).
  3. 03Build per-week climatological percentile · 35 winters.
  4. 04Anomaly = current week vs. cell's own 30-year baseline.
  5. 05Snow-sure read at the highest-snow cell within ~15km. When most resorts are bare, ranking shifts toward this, surfacing glaciers in shoulder seasons.
  6. 06Weight + rank against your origin & vibe profile.
Sources

Snow data sources

Ground stations the score is based on.

  • LE TOUR BALMEmeteofrance
  • LA FLEGEREmeteofrance
  • Lognanmeteofrance
  • CHAMONIX-OBSmeteofrance