Mondsee water temperature
Mondsee · Lake
The current water temperature at Mondsee is 19.5 °C (as of September 20, 2026, source: Hydrographie Land Oberösterreich).
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
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Water quality
EU classification: excellentMeasurement series & statistics
This measurement series includes 763 data points since July 22, 2026.
Lowest recorded value: 18.9 °C on September 19, 2026 · highest value: 27.0 °C on August 15, 2026.
In September, temperatures have ranged between 18.9 °C and 25.2 °C.
The current value is 2.0 °C below the September average of this series.
Nearby waters
More measuring points: Mondsee
Frequently asked questions
Can you swim at Mondsee right now?
The current water temperature is 19.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Mondsee?
Currently 19.5 °C (updated continuously).
How warm is at Mondsee in September?
In September, the water temperature recently averaged 21.5 °C.
When is the water warmest at Mondsee?
Across the measurement record, August is on average the warmest month (24.0 °C).
How is the water quality at Mondsee?
The official classification is: excellent.
