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Lake ZugWater level today

416.07m a.s.l.

+1 cm since yesterday

Measured20 minutes ago

Lorze, Zug-Letzi (outflow) · Bundesamt für Umwelt (BAFU)

Change across the visible readings

+1 cm

09/20 – 09/21

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View water balance →Year comparison →Temperature profile →
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Today at the lake

The current picture

A factual data summary – not a safety or swimming clearance.

Water temperature

22.0 °C

Pleasant

Modelled

Wind

7.6 km/h

Calm

Measured

Precipitation, 24h

0.0 mm

Dry

Measured

What's happening?

The level has been falling for a week.

-0.01 m ü. M. · over 7 days

Weather at the lake

16.0°Air temperature
0.0mmRain, last 24 h
7.6km/hWind
12.3–20.8°Day range

0.0 mm in 48 h · 8.1 mm over 7 days · Gusts 16.6 km/h · 69 % humidity

Source: MeteoSwiss, station Cham · 1 hour ago

UV index

Low
0Daily maximum 4
Course of the day
912151821

No protection needed.

Source: Open-Meteo

Recent events

10 hours ago

Modelled lake temperature (1 m depth): new weekly low (21.7 °C)

2 days ago

Modelled lake temperature (1 m depth): new weekly low (21.9 °C)

3 days ago

Modelled lake temperature (1 m depth): new weekly low (21.9 °C)

3 days ago

Modelled lake temperature (1 m depth): new weekly low (22.0 °C)

3 days ago

Modelled lake temperature (1 m depth): new weekly low (22.1 °C)

3 days ago

Modelled lake temperature (1 m depth): new weekly low (22.1 °C)

Stations

4 monitoring stations
Show monitoring stations
Modelled lake temperature (1 m depth) · CH22.0 °C1 hour ago↓Lorze, Zug-Letzi (outflow) · CH0.4 m³/s20 minutes ago→Lorze, Zug-Letzi (outflow) · CH416.07 m a.s.l.20 minutes ago→Zug · CH413.21 m a.s.l.20 minutes ago↓

Webcams at Lake Zug

Drag the timeline to compare the daily archive images.

Zug: Zug Marina (Hafen)

Zug: Zug Marina (Hafen)

Archive imageSep 21, 2026, 4:00 PM
Time travelSep 21, 2026, 4:00 PM
09/11Latest image
View original webcam
Cham › Südost: Segel Club Cham – Zugersee

Cham › Südost: Segel Club Cham – Zugersee

Archive imageSep 21, 2026, 4:00 PM
Time travelSep 21, 2026, 4:00 PM
09/11Latest image
View original webcam
Walchwil › West: Halbinsel Chiemen – Zugersee

Walchwil › West: Halbinsel Chiemen – Zugersee

Archive imageSep 21, 2026, 4:00 PM
Time travelSep 21, 2026, 4:00 PM
09/11Latest image
View original webcam

Understanding the water level

What is the water level of Lake Zug? See the latest available level, its measurement time and source. Compare readings from the same station to understand the trend.

Reading in context

Putting Lake Zug's current level in context

The main station at Lorze, Zug-Letzi (outflow) reports a water level of 416.07 m a.s.l. at Sep 21, 2026, 9:50 PM. The series is provided by Bundesamt für Umwelt (BAFU). This value is the elevation of the water surface above the official height datum, not the water depth at the shore.

Comparison with the nearest valid readings gives +1 cm over 24 hours and -1 cm over seven days. These are net changes between two points in time; they prove neither a continuous rise or fall nor its cause.

Understanding Lake Zug

Lake Zug lies between the cantons of Zug, Lucerne and Schwyz.

This overview includes 4 monitoring stations for water level, discharge, and water temperature. Not every station provides every measurement. Track changes at the same station, checking the timestamp, unit and source notes.

The curve shows recent level changes. A seasonal median, where available, compares the same time of year. Water can rise while remaining below that median: trend and comparison answer different questions. Neither replaces an official warning.

Measurement quality and sources

Data status

  • Measured — Recorded directly at a monitoring station.
  • Modelled — Computed by a scientific model (e.g. lake temperature from Alplakes), not measured on site.
  • Calculated — Derived from existing measurements, e.g. a balance or a change.
  • Archive image — Last archived image, not live.
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