Showing this resort's typical peak window · closest airport CMF — adjust above
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Resort dossier
La Rosière
Weeks 1–4
Typically -13.0°C · 29cm fresh / week · powder day 59% · mixed 50%
Top elev.
2641m
Base elev.
1850m
Pistes
160km
Lifts
38
Piste mix68km mapped
Green10%
Blue43%
Red36%
Black7%
Freeride4%
[ Tarentaise ]
46.92°N · 7.87°E
COMPOSITE SCORE
66
Snow91
Typically 147cm
Typical depth147cm
118cm174cm
Travel37
From your origin
Size77
Piste km, discounted for linked-area connectivity
Fit50
Vibe, terrain, activities
What to expect
What to expect in weeks 1–4
Based on 25 winters of weather data, modelled at ~1593m (not the village). Any single year can be very different.
Typically mixed, around -13.0°C, with 29cm of fresh snow over the week. Powder days hit 59% of the time. Other weeks run stormy.
Icy mornings
0.4 days/week
spring-like in 4% of years
Snow texture
Settled
packed, predictable piste
Typical wind
4.1 m/s
peaks to 25 m/s
Typical Freezing level
245 m
0°C isotherm
Powder days
59%
of years see 10cm+
Rain at base
0 days
per week
Storm
36%
of years
Bluebird
14%
of years
Thaw
0%
of years
Mixed
50%
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
147cm
Temperature
-13.0°C
Fresh snow
29cm
Snow line
246m
Wind
4.1 m/s
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Transfers
Transfers
| Airport | Drive | Train |
|---|---|---|
| Chambéry (CMF) | 113 min | |
| Grenoble (GNB) | 159 min | |
| Geneva (GVA) | 168 min | |
| Lyon (LYS) | 160 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.
- 01ERA5-Land hourly grid → daily SWE & snow depth at the resort cell.
- 02Bias-correct against ground stations (SLF / Météo-France nivôse).
- 03Build per-week climatological percentile · 35 winters.
- 04Anomaly = current week vs. cell's own 30-year baseline.
- 05Snow-sure read at the highest-snow cell within ~15km. When most resorts are bare, ranking shifts toward this, surfacing glaciers in shoulder seasons.
- 06Weight + rank against your origin & vibe profile.
Sources
Snow data sources
Ground stations the score is based on.
- La Rosieremeteofrance
- Les Arcsmeteofrance