Lake Constance, Strandbad Bregenz, Bregenz · Lake
The current water temperature at Lake Constance is 21.4 °C (as of September 18, 2026, source: AGES).
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
This measurement series includes 61 data points since July 22, 2026.
Lowest recorded value: 21.4 °C on September 18, 2026 · highest value: 26.5 °C on August 14, 2026.
In September, temperatures have ranged between 21.4 °C and 23.5 °C.
The current value is 1.1 °C below the September average of this series.
Can you swim at Lake Constance right now?
The current water temperature is 21.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lake Constance?
Currently 21.4 °C (updated continuously).
How warm is at Lake Constance in September?
In September, the water temperature recently averaged 22.5 °C.
When is the water warmest at Lake Constance?
Across the measurement record, August is on average the warmest month (24.9 °C).
How is the water quality at Lake Constance?
The official classification is: excellent.