Piz Badus

Mountain Alpine peak in Canton Uri offering mountain trails.

A mountain in Canton Uri, Piz Badus offers alpine hiking routes and summer trails; walkers come for high-mountain scenery and ridge walks in Switzerland’s alpine terrain.

Main image

Piz Badus, also called Tomül in Romansh, is a mountain in the Glarus Alps of central Switzerland with an elevation of approximately 2,928 metres. It sits on high ground that separates alpine valleys and is a known objective for hikers and mountaineers.

Routes to the summit traverse alpine pastures and rocky paths; the mountain provides panoramic views across nearby ranges and into adjoining cantons. The area around the summit includes high-mountain lakes and typical alpine terrain.

The mountain is a natural landmark rather than a constructed site; it and its slopes have long been used for alpine grazing and seasonal travel before becoming popular for recreational hiking in the modern period.

Piz Badus lies in central Switzerland on the watershed between cantons, with slopes that adjoin Uri and Graubünden; a notable nearby feature is Lai da Tuma (Lake Toma) on the mountain’s slopes, traditionally cited as a Rhine source.

  • Hiking: The summit is often reached by marked mountain trails and is a common objective for multi-hour alpine hikes.
  • Names and range: Also known by its Romansh name Tomül, the peak is part of the Glarus Alps and offers views over surrounding valleys and high-alpine terrain.

What to See #

  • Lake Toma (Tomasee): Lai da Tuma (Lake Toma) sits on the mountain's northern slopes and is widely recognized as a source lake for the Rhine river system.
Piz Badus
46.6225, 8.6637

How to Get to Piz Badus #

Piz Badus is in the Canton of Uri region. Access is typically from local trailheads reached by road from nearby towns in Uri. Trains and buses serve the larger valley towns; final access to the mountain requires a mountain trail and can involve a full day’s hike. Check local Swiss alpine club (SAC) resources for route details.

Tips for Visiting Piz Badus #

  • Start early in summer - the alpine pastures are cooler and the trailhead can fill with day-hikers later in the day.
  • Check mountain weather and bring appropriate alpine equipment; conditions change quickly above 2,000 m.
  • If attempting from the north, note that routes cross alpine terrain and may require map and compass or a GPS track.

Best Time to Visit Piz Badus #

Summer is best for hiking; winter for experienced mountaineers with avalanche knowledge.

Summer
June-September · 5-18°C (41-64°F) depending on elevation
Trails are usually snow-free and alpine flowers bloom; most popular season for hikes.
Winter
December-March · -10-0°C (14-32°F)
Snow and avalanche risk make excursions suitable only for experienced ski-mountaineers.

Weather & Climate near Piz Badus #

Climate

Piz Badus's climate is classified as Tundra - Tundra climate with cold summers (peaking in August) and freezing winters (coldest in February). Temperatures range from -12°C to 9°C. Abundant rainfall (1290 mm/year), wettest in July, distributed fairly evenly throughout the year.

Best Time to Visit
AugustJulySeptember
Temperature & Rainfall
Temperature Range
27°
Warmest Month
-30°
Coldest Month
Monthly Conditions

January

January is freezing with highs of -6°C and lows of -11°C. Significant rainfall (101 mm), partly cloudy skies, and breezy conditions.

29 Poor

Comfort

-8°
Feels Like Freezing
-8°C
Temperature
-11° -6°
90%
Humidity
Very Humid

Weather

101 mm
Rainfall
6.3 m/s
Wind
Breezy
0.2
UV Index
Low
8.9h daylight

February

February is the coldest month with highs of -6°C and lows of -12°C. Regular rainfall (89 mm) and partly cloudy skies.

33 Poor

Comfort

-9°
Feels Like Freezing
-9°C
Temperature
-12° -6°
90%
Humidity
Very Humid

Weather

89 mm
Rainfall
5.9 m/s
Wind
Light Breeze
0.3
UV Index
Low
10.2h daylight

March

March is freezing with highs of -5°C and lows of -10°C. Significant rainfall (105 mm) and partly cloudy skies.

31 Poor

Comfort

-8°
Feels Like Freezing
-8°C
Temperature
-11° -5°
90%
Humidity
Very Humid

Weather

105 mm
Rainfall
5.9 m/s
Wind
Light Breeze
0.7
UV Index
Moderate
11.8h daylight

April

April is freezing with highs of -4°C and lows of -9°C. Significant rainfall (111 mm) and mostly overcast skies.

27 Poor

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-9° -4°
86%
Humidity
Very Humid

Weather

111 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 -4°C. Significant rainfall (101 mm) and mostly overcast skies.

31 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-4°
82%
Humidity
Very Humid

Weather

101 mm
Rainfall
5.0 m/s
Wind
Light Breeze
1.3
UV Index
High
14.8h daylight

June

June is cold with highs of 5°C and lows of -1°C. Significant rainfall (114 mm) and mostly overcast skies.

40 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
78%
Humidity
Very Humid

Weather

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

July

July is cold with highs of 8°C and lows of 2°C. The wettest month with heavy rain (122 mm) and partly cloudy skies.

46 Poor

Comfort

Feels Like Cold
C
Temperature
78%
Humidity
Very Humid

Weather

122 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 9°C and lows of 3°C. Significant rainfall (120 mm) and partly cloudy skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
80%
Humidity
Very Humid

Weather

120 mm
Rainfall
4.3 m/s
Wind
Light Breeze
1.4
UV Index
High
14.0h daylight

September

September is cold with highs of 6°C and lows of 0°C. Significant rainfall (110 mm) and partly cloudy skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
82%
Humidity
Very Humid

Weather

110 mm
Rainfall
5.0 m/s
Wind
Light Breeze
1.0
UV Index
Moderate
12.4h daylight

October

October is freezing with highs of 2°C and lows of -3°C. Significant rainfall (105 mm) and partly cloudy skies.

36 Poor

Comfort

Feels Like Freezing
C
Temperature
-3°
86%
Humidity
Very Humid

Weather

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

November

November is freezing with highs of -3°C and lows of -8°C. Significant rainfall (110 mm), partly cloudy skies, and breezy conditions.

33 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-8° -3°
90%
Humidity
Very Humid

Weather

110 mm
Rainfall
6.0 m/s
Wind
Breezy
0.2
UV Index
Low
9.3h daylight

December

December is freezing with highs of -4°C and lows of -10°C. Significant rainfall (102 mm), partly cloudy skies, and breezy conditions.

29 Poor

Comfort

-7°
Feels Like Freezing
-7°C
Temperature
-10° -4°
88%
Humidity
Very Humid

Weather

102 mm
Rainfall
6.4 m/s
Wind
Breezy
0.1
UV Index
Low
8.5h daylight

Nearby Attractions to Piz Badus