Grabensee · Lake
The current water temperature at Grabensee is 19.7 °C (as of September 20, 2026, source: Hydrographie Land Salzburg).
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 504 data points since July 22, 2026.
Lowest recorded value: 19.4 °C on September 19, 2026 · highest value: 39.3 °C on July 25, 2026.
In September, temperatures have ranged between 19.4 °C and 24.1 °C.
The current value is 2.2 °C below the September average of this series.
Can you swim at Grabensee right now?
The current water temperature is 19.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Grabensee?
Currently 19.7 °C (updated continuously).
How warm is at Grabensee in September?
In September, the water temperature recently averaged 21.9 °C.
When is the water warmest at Grabensee?
Across the measurement record, July is on average the warmest month (26.2 °C).