Halensee · Lake
The current water temperature at Halensee is 19.3 °C (as of September 16, 2026, source: Wasserportal Berlin).
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 511 data points since July 22, 2026.
Lowest recorded value: 18.5 °C on September 18, 2026 · highest value: 25.8 °C on August 6, 2026.
In September, temperatures have ranged between 18.5 °C and 21.6 °C.
The current value is 0.6 °C below the September average of this series.
Can you swim at Halensee right now?
The current water temperature is 19.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Halensee?
Currently 19.3 °C (updated continuously).
How warm is at Halensee in September?
In September, the water temperature recently averaged 19.9 °C.
When is the water warmest at Halensee?
Across the measurement record, August is on average the warmest month (22.9 °C).
How is the water quality at Halensee?
The official classification is: excellent.