Piz Segnas

Mountain Swiss mountain notable for the Martinsloch rock window

In Graubünden’s Glarus Alps, Piz Segnas rises among jagged ridges noted for visible geological folds. Climbers and hikers use trails and via‑ferrata routes to access dramatic rock scenery.

Main image

Piz Segnas is a mountain in the canton of Graubünden in eastern Switzerland, located within the Glarus Alps. It is a well-known peak for alpine hiking and scrambling in the region.

The mountain and its surroundings offer alpine trails, steep ridgelines and routes used by experienced hikers and climbers; nearby trails provide views of classic alpine geology. The area is integrated into a broader network of mountain paths and mountain huts used in warm months.

The mountain and its immediate area have been traversed and used by local alpine communities for centuries and have become part of modern mountaineering and geological study owing to the area’s distinctive rock formations.

Piz Segnas sits in eastern Switzerland’s mountainous Graubünden canton within the Glarus Alps, in the broader region designated as the Tectonic Arena Sardona UNESCO geological site.

  • UNESCO site: Part of the Tectonic Arena Sardona UNESCO geological region; the area is noted for its visible geological folds and is popular with hikers during the summer months.
Piz Segnas
Piz Segnas, canton of Graubünden (Grisons), Switzerland
46.9079, 9.2397

Tips for Visiting Piz Segnas #

  • Begin hikes to Piz Segnas from Elm (Elm village) - trails from Elm are the usual, well-marked approaches and Elm is the common base for visiting the Martinsloch area.
  • Plan for an early start to avoid afternoon storms common in the Alps and to get clearer photography of the Martinsloch rock window between Piz Segnas and neighboring peaks.
  • Combine the hike with time in the Tectonic Arena Sardona UNESCO zone - many visitors focus on the summit and miss the distinctive geological formations and explanatory panels around the visitor areas.
  • Be prepared for exposed, rocky segments: route descriptions label some approaches as demanding, so only attempt the ridgeline or north-face tracks if you have the necessary experience or a certified guide.

Best Time to Visit Piz Segnas #

Midsummer (June-September) is the best time for hiking and scrambling; otherwise expect snowy, technical conditions.

Summer (best for hiking)
June-September · Alpine: around 0-15 °C depending on altitude
Most routes are clear of snow and are accessible for hikers and scramblers in stable weather.
Winter and shoulder months
October-May · Often below freezing at higher elevations
Snow, ice and avalanche risk make approaches more technical-appropriate for experienced winter mountaineers only.

Weather & Climate near Piz Segnas #

Climate

Piz Segnas's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in February). Temperatures range from -13°C to 7°C. Abundant rainfall (1850 mm/year), wettest in July, distributed fairly evenly throughout the year.

Best Time to Visit
AugustJulySeptember
Temperature & Rainfall
Temperature Range
36°
Warmest Month
-29°
Coldest Month
Monthly Conditions

January

January is freezing with highs of -6°C and lows of -12°C. Significant rainfall (152 mm), partly cloudy skies, and breezy conditions.

25 Poor

Comfort

-9°
Feels Like Freezing
-9°C
Temperature
-12° -7°
89%
Humidity
Very Humid

Weather

152 mm
Rainfall
6.7 m/s
Wind
Breezy
0.2
UV Index
Low
8.9h daylight

February

February is the coldest month with highs of -7°C and lows of -13°C. Significant rainfall (133 mm), partly cloudy skies, and breezy conditions.

27 Poor

Comfort

-10°
Feels Like Freezing
-10°C
Temperature
-13° -7°
90%
Humidity
Very Humid

Weather

133 mm
Rainfall
6.4 m/s
Wind
Breezy
0.3
UV Index
Low
10.2h daylight

March

March is freezing with highs of -6°C and lows of -12°C. Significant rainfall (151 mm), partly cloudy skies, and breezy conditions.

25 Poor

Comfort

-9°
Feels Like Freezing
-9°C
Temperature
-12° -6°
87%
Humidity
Very Humid

Weather

151 mm
Rainfall
6.1 m/s
Wind
Breezy
0.7
UV Index
Moderate
11.8h daylight

April

April is freezing with highs of -5°C and lows of -10°C. Significant rainfall (154 mm) and mostly overcast skies.

23 Poor

Comfort

-7°
Feels Like Freezing
-7°C
Temperature
-10° -5°
80%
Humidity
Very Humid

Weather

154 mm
Rainfall
5.5 m/s
Wind
Light Breeze
1.0
UV Index
High
13.4h daylight

May

May is freezing with highs of 0°C and lows of -5°C. Significant rainfall (129 mm) and mostly overcast skies.

29 Poor

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-5° -1°
79%
Humidity
Very Humid

Weather

129 mm
Rainfall
4.9 m/s
Wind
Light Breeze
1.3
UV Index
High
14.8h daylight

June

June is cold with highs of 3°C and lows of -2°C. Significant rainfall (167 mm) and mostly overcast skies.

36 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
79%
Humidity
Very Humid

Weather

167 mm
Rainfall
4.6 m/s
Wind
Light Breeze
1.7
UV Index
Very High
15.6h daylight

July

July is cold with highs of 6°C and lows of 1°C. The wettest month with heavy rain (187 mm) and partly cloudy skies.

40 Poor

Comfort

Feels Like Cold
C
Temperature
79%
Humidity
Very Humid

Weather

187 mm
Rainfall
4.6 m/s
Wind
Light Breeze
1.7
UV Index
Very High
15.2h daylight

August

August is cold with highs of 7°C and lows of 1°C. Significant rainfall (173 mm) and partly cloudy skies.

42 Poor

Comfort

Feels Like Cold
C
Temperature
81%
Humidity
Very Humid

Weather

173 mm
Rainfall
4.2 m/s
Wind
Light Breeze
1.4
UV Index
High
14.0h daylight

September

September is cold with highs of 4°C and lows of -1°C. Significant rainfall (151 mm) and partly cloudy skies.

40 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
83%
Humidity
Very Humid

Weather

151 mm
Rainfall
4.9 m/s
Wind
Light Breeze
1.0
UV Index
Moderate
12.4h daylight

October

October is freezing with highs of 1°C and lows of -4°C. Significant rainfall (136 mm) and partly cloudy skies.

34 Poor

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-4°
84%
Humidity
Very Humid

Weather

136 mm
Rainfall
5.6 m/s
Wind
Light Breeze
0.5
UV Index
Low
10.7h daylight

November

November is freezing with highs of -4°C and lows of -9°C. Significant rainfall (157 mm), partly cloudy skies, and breezy conditions.

29 Poor

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-9° -4°
87%
Humidity
Very Humid

Weather

157 mm
Rainfall
6.4 m/s
Wind
Breezy
0.2
UV Index
Low
9.3h daylight

December

December is freezing with highs of -5°C and lows of -11°C. Significant rainfall (160 mm), partly cloudy skies, and breezy conditions.

25 Poor

Comfort

-8°
Feels Like Freezing
-8°C
Temperature
-11° -5°
88%
Humidity
Very Humid

Weather

160 mm
Rainfall
6.9 m/s
Wind
Breezy
0.1
UV Index
Low
8.5h daylight

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