Aletschhorn Mountain

Alpine peak above the Aletsch Glacier in Valais

In Valais, Aletschhorn is a high Alpine peak above the Aletsch Glacier; mountaineers and experienced hikers use its routes for glacier travel and high‑mountain ascents.

Main image

Aletschhorn at a Glance#

About Aletschhorn#

Aletschhorn is a high mountain in the Bernese Alps of Switzerland, notable for its large, glaciated flanks and for overlooking the Aletsch Glacier. It reaches an elevation of roughly 4,193 metres and is a major summit within the Aletsch region.

The peak was first climbed in the mid-19th century during the golden age of alpinism and subsequently became part of explorations of the Bernese Alps; it has remained a classic alpine ascent in Swiss mountaineering literature. Glacial retreat and climatic change have altered approach conditions in recent decades, affecting routes and hut approaches.

Located in the Valais canton of Switzerland within the Bernese Alps, the Aletschhorn sits above the eastern part of the Aletsch Glacier; the nearest larger settlements are valley towns in Valais and the area is accessed via mountain trails and alpine huts.

  • Elevation: Rises to about 4,193 metres and is a prominent glaciated peak overlooking the Aletsch Glacier in the Bernese Alps.
  • Alpine status: Part of the Jungfrau-Aletsch region, a UNESCO World Heritage site, and favoured by alpine mountaineers rather than casual hikers due to technical glacier routes.

How to Get to Aletschhorn#

Access to Aletschhorn is from the Aletsch region in Valais and requires alpine approach over glacier terrain. Typical starting points are the Rhone Valley rail hubs (Brig) or the railway and lift access at Fiesch; from there you use mountain cable cars/trails (for example Fiesch-Eggishorn area) and then join glacier routes toward the Aletsch Glacier and alpine huts. Climbs require glacier equipment and/or a certified mountain guide.

Tips for Visiting Aletschhorn#

  • Plan any climb or approach for the summer mountaineering season and only attempt routes with full glacier equipment and high-alpine experience; Aletschhorn is a technical alpine summit rather than a simple hike.
  • Use established mountain-hut bases (for example the Konkordiahütte area in the Jungfrau-Aletsch region) and book hut berths well in advance; many summit attempts start from these refuges.
  • If you're not a roped-glacier party, enjoy the Aletsch region from nearby viewpoints (Eggishorn/Bettmerhorn areas) - most casual visitors appreciate the Aletsch Glacier panorama without attempting the technical ascent.

Best Time to Visit Aletschhorn#

Best visited in mid‑summer (July-September) when alpine routes and glacier conditions are most stable for climbing.

Alpine summer (best for climbing)
Jul-Sep · Valley ~5-15°C; high elevations usually below 0°C
Main mountaineering season with more stable weather and safer glacier conditions for ascents.
Winter
Dec-Mar · Valley -10-5°C; summit far colder
Severe winter conditions with high avalanche risk-suitable only for experienced winter alpinists and guided parties.
Shoulder seasons
May-Jun & Oct · Variable
Unstable conditions and residual snow or early snowfall-only for experienced parties prepared for mixed conditions.

Weather & Climate near Aletschhorn#

Climate

Aletschhorn's climate is classified as Tundra - Tundra climate with freezing summers (peaking in August) and freezing winters (coldest in February). Temperatures range from -17°C to 0°C. Semi-arid with limited rainfall.

Air Quality: AQI 34 Good
Best Time to Visit
AugustJuneJuly
Temperature & Rainfall
Temperature Range
26°
Warmest Month
-29°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -16° - -12° -25° 47 mm overcast 87% 10.4 m/s 0.1 low 8.9h
February Poor -17° - -12° -26° 42 mm overcast 87% 9.2 m/s 0.3 low 10.2h
March Poor -17° - -12° -26° 52 mm partly cloudy 87% 9.3 m/s 0.6 moderate 11.8h
April Poor -15° - -11° -24° 33 mm partly cloudy 84% 8.2 m/s 1.0 high 13.4h
May Poor -11° - -6° -17° 28 mm overcast 81% 7.4 m/s 1.4 high 14.8h
June Poor -7° - -4° -13° 33 mm partly cloudy 78% 7.0 m/s 1.7 very high 15.6h
July Poor -3° - -1° -9° 41 mm partly cloudy 77% 7.0 m/s 1.8 very high 15.2h
August Poor -2° - 0° -7° 42 mm partly cloudy 79% 6.2 m/s 1.5 high 14.0h
September Poor -4° - -3° -10° 37 mm partly cloudy 81% 7.1 m/s 1.0 moderate 12.4h
October Poor -8° - -5° -14° 27 mm partly cloudy 83% 8.3 m/s 0.5 moderate 10.7h
November Poor -12° - -8° -20° 39 mm overcast 87% 9.4 m/s 0.2 low 9.3h
December Poor -14° - -10° -23° 37 mm overcast 85% 10.1 m/s 0.1 low 8.5h

Nearby Attractions to Aletschhorn#