Alster · Lake
The current water temperature at Alster is 20.8 °C (as of July 22, 2026, source: Badegewässer Hamburg (BUE/BUKEA)).
Can you swim at Alster right now?
The current water temperature is 20.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Alster?
Currently 20.8 °C (updated continuously).
How warm is at Alster in July?
In July, the water temperature recently averaged 20.8 °C.