Zeller See (Irrsee) water temperature
Zeller See (Irrsee), Zell am Moos · Lake
The current water temperature at Zeller See (Irrsee) is 20.6 °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.
Water quality
EU classification: excellentMeasurement series & statistics
This measurement series includes 763 data points since July 22, 2026.
Lowest recorded value: 20.1 °C on September 19, 2026 · highest value: 27.3 °C on August 5, 2026.
In September, temperatures have ranged between 20.1 °C and 24.5 °C.
The current value is 1.9 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Zeller See (Irrsee) right now?
The current water temperature is 20.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Zeller See (Irrsee)?
Currently 20.6 °C (updated continuously).
How warm is at Zeller See (Irrsee) in September?
In September, the water temperature recently averaged 22.5 °C.
When is the water warmest at Zeller See (Irrsee)?
Across the measurement record, August is on average the warmest month (25.0 °C).
How is the water quality at Zeller See (Irrsee)?
The official classification is: excellent.
