Mummelsee Lake

Small glacial lake in the Black Forest

A small lake on the Hornisgrinde plateau in Germany's Black Forest, the Mummelsee attracts day visitors for short lakeside walks, nearby cafés and hiking on surrounding trails.

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Mummelsee at a Glance#

Address: Mummelsee (near Seebach), Black Forest (Schwarzwald), Baden-Württemberg, Germany

Website: https://www.schwarzwald-tourismus.info/orte/mummelsee-p349

Hours: Open year-round

Admission: Free to access (boat rides/restaurant services extra)

About Mummelsee#

Mummelsee is a small glacial cirque lake in the Northern Black Forest (Baden-Württemberg), Germany, located on the Hornisgrinde plateau at roughly 1,036 metres elevation.

The lake is a compact tourist destination with a short circular walking path, lakeside café and hotel facilities; pedal boats are commonly available in the warmer months and trails lead from the lake into the surrounding forest. It is a standard stopping point on the scenic Black Forest High Road.

Mummelsee occupies a glacially formed hollow and is surrounded by dense mixed forest typical of the region; the lake and adjacent uplands developed as a tourist attraction in the 19th and 20th centuries. The immediate shoreline is largely natural with maintained visitor paths.

The lake sits on the western edge of the Hornisgrinde massif in the Northern Black Forest, within Baden-Württemberg and accessible by road and marked walking trails from nearby villages and the Schwarzwaldhochstraße.

  • Elevation: Sits at about 1,036 metres above sea level on the Hornisgrinde plateau in the Northern Black Forest.
  • Visitor facilities: A surfaced circular path runs around the lake and seasonal pedal-boat rental and a lakeside café/hotel serve visitors, making it a popular short stop on the Schwarzwaldhochstraße.

How to Get to Mummelsee#

Mummelsee is on the B500 (Schwarzwaldhochstraße) between Baden-Baden and Freudenstadt. By car it’s an easy stop along this scenic road. Public transport options include regional buses from Seebach or Baiersbronn; the nearest larger rail hubs are Baden-Baden and Freudenstadt, from which local buses run to the lake.

Tips for Visiting Mummelsee#

  • Walk the 400-metre lakeside path counterclockwise for the best viewpoint of the steep, tree-lined shore.
  • Try the local Seebach pastries at the lakeside café - they pair well with the lake's cool air.
  • If photographing the lake at dawn, use a polarising filter to reduce surface glare and reveal underwater tree trunks.

Best Time to Visit Mummelsee#

Best visited late spring through early autumn for mild weather and full services; autumn offers quieter conditions and rich colours.

Summer
Jun-Aug · 15-25°C (59-77°F)
Pleasant temperatures, busiest season for pedalos and lakeside cafés.
Autumn
Sep-Nov · 5-15°C (41-59°F)
Fewer visitors and beautiful fall foliage on the steep slopes around the lake.
Winter
Dec-Feb · -5-5°C (23-41°F)
Snow can rim the lake and transform the area into a quiet, snowy scene; some facilities may close.

Weather & Climate near Mummelsee#

Climate

Mummelsee's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with cool summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -4°C to 19°C. Heavy rainfall (2005 mm/year), wettest in December, distributed fairly evenly throughout the year.

Air Quality: AQI 27 Good
Temperature & Rainfall
Temperature Range
19°
Warmest Month
-4°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -4° - 1° -7° 188 mm - - 5.3 m/s - -
February - -3° - 2° -6° 165 mm - - 4.9 m/s - -
March - -2° - 5° -3° 168 mm - - 4.9 m/s - -
April - 1° - 8° 1° 138 mm - - 4.3 m/s - -
May - 5° - 13° 7° 161 mm - - 4.1 m/s - -
June - 8° - 16° 12° 171 mm - - 3.8 m/s - -
July - 11° - 19° 15° 167 mm - - 3.7 m/s - -
August - 11° - 19° 15° 128 mm - - 3.5 m/s - -
September - 8° - 15° 11° 140 mm - - 4.0 m/s - -
October - 4° - 10° 4° 176 mm - - 4.3 m/s - -
November - 0° - 5° -2° 199 mm - - 4.9 m/s - -
December - -2° - 2° -5° 204 mm - - 5.3 m/s - -

Nearby Attractions to Mummelsee#