Traunsee, Altmünster water temperature
Traunsee, Altmünster, Altmünster · Lake
The current water temperature at Traunsee is 18.6 °C (as of September 20, 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.
Water quality
EU classification: excellent · Visibility depth: 6.0 mMeasurement series & statistics
This measurement series includes 796 data points since July 22, 2026.
Lowest recorded value: 18.2 °C on September 19, 2026 · highest value: 24.7 °C on August 9, 2026.
In September, temperatures have ranged between 18.2 °C and 22.9 °C.
The current value is 2.2 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Traunsee right now?
The current water temperature is 18.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Traunsee?
Currently 18.6 °C (updated continuously).
How warm is at Traunsee in September?
In September, the water temperature recently averaged 20.8 °C.
When is the water warmest at Traunsee?
Across the measurement record, August is on average the warmest month (22.7 °C).
How is the water quality at Traunsee?
The official classification is: excellent.
