PeakWindow/Aletsch Arena
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Showing this resort's typical peak window · closest airport BRN — adjust above
Resort dossier

Aletsch Arena

CH·Valaisless snow sure
car-freeiconic-viewfamily-friendlyrail-accessible
Weeks 9–12

Typically -7.5°C · 27cm fresh / week · powder day 51% · mixed 53%

Top elev.
2869m
Base elev.
1950m
Pistes
104km
Lifts
35
Piste mix86km mapped
Blue48%
Red43%
Black4%
Freeride4%
Aletsch Arena
Wikimedia
COMPOSITE SCORE
56
Snow83
Typically 91cm
Typical depth91cm
77cm112cm
Travel0
From your origin
Size73
Piste km, discounted for linked-area connectivity
Fit50
Vibe, terrain, activities
What to expect

What to expect in weeks 9–12

Based on 29 winters of weather data, modelled at ~2011m (not the village). Any single year can be very different.

Typically mixed, around -7.5°C, with 27cm of fresh snow over the week. Powder days hit 51% of the time. Other weeks run stormy.

Icy mornings
2.7 days/week
spring-like in 38% of years
Snow texture
Heavy / wet
spring snow, sticky and slow
Typical wind
10.7 m/s
peaks to 30 m/s
Typical Freezing level
1256 m
0°C isotherm
Powder days
51%
of years see 10cm+
Rain at base
0 days
per week
Storm
40%
of years
Bluebird
7%
of years
Thaw
0%
of years
Mixed
53%
of years
Climatology

What a season here looks like

Each track shows the typical range across 29 winters. The marker shows where your selected weeks sit.

Reliability60cm+
98%
Depth
91cm
Temperature
-7.5°C
Fresh snow
27cm
Snow line
1257m
Wind
10.7 m/s
Trend · 76 winters

Thinner snow, and warmer air

Aletsch Arena's typical base has been getting slightly shallower, by 4cm a decade across 76 winters. The winter freezing level has climbed 47m a decade.

137cm
137cm
137cm
131cm
130cm
123cm
127cm
100cm
1950–1959
1960–1969
1970–1979
1980–1989
1990–1999
2000–2009
2010–2019
2020–2025
Winter to winter
77–203cm

Across single winters (2022–23 to 1974–75).

Typical base
−37cm

1950–1959 to 2020–2025. The Valais region moved −20cm.

Freezing level
+47m

Per decade. 859m in 1950–1959, 1290m now. Still 660m below the village.

Calibrated reanalysis, 1950–2025. Bars are each winter's mean base, rules each decade's mean. 2020–2025 holds 6 winters, not ten. Every figure here averages a full season, so none of them will match the readings for your chosen weeks above.

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Transfers

Transfers

AirportDriveTrain
Bern (BRN)205 min
Milan Malpensa (MXP)210 min
Turin (TRN)253 min
Zürich (ZRH)251 min
Method & sources

We weigh snow reliability against this resort's own history, add live conditions where we have them, then adjust for how hard the trip 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 · 30 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.

  • EGH2slf
  • BEL2slf