Naarn, Haid · River
The current water temperature at Naarn is 15.7 °C (as of September 21, 2026, source: Hydrographie Land Oberösterreich).
A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.
This measurement series includes 501 data points since August 6, 2026.
Lowest recorded value: 13.4 °C on September 19, 2026 · highest value: 27.7 °C on August 7, 2026.
In September, temperatures have ranged between 13.4 °C and 24.4 °C.
The current value is 3.4 °C below the September average of this series.
Can you swim at Naarn right now?
The current water temperature is 15.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Naarn?
Currently 15.7 °C (updated continuously).
How warm is at Naarn in September?
In September, the water temperature recently averaged 19.1 °C.