Altmühlsee water temperature
Altmühlsee, Altmühlsee Seepegel · Lake
The current water temperature at Altmühlsee is 13.7 °C (as of October 16, 2026, source: GKD Bayern).
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
Water quality
EU classification: excellentMeasurement series & statistics
This measurement series includes 461 data points since August 17, 2026.
Lowest recorded value: 13.1 °C on October 15, 2026 · highest value: 23.9 °C on August 17, 2026.
In October, temperatures have ranged between 13.1 °C and 18.5 °C.
The current value is 2.5 °C below the October average of this series.
Nearby waters
Frequently asked questions
Can you swim at Altmühlsee right now?
The current water temperature is 13.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Altmühlsee?
Currently 13.7 °C (updated continuously).
How warm is at Altmühlsee in October?
In October, the water temperature recently averaged 16.2 °C.
When is the water warmest at Altmühlsee?
Across the measurement record, August is on average the warmest month (21.5 °C).
How is the water quality at Altmühlsee?
The official classification is: excellent.
