Untere Au, Frastanz water temperature

Untere Au, Frastanz, Frastanz · Lake

The current water temperature at Untere Au is 20.7 °C (as of August 24, 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.

20.7 °C

Measured: August 24, 2026 · continuously updated

💧 Water 20.7° · ☀️ Air 10.9° · high today 18.9°

Temperature trend of recent weeks

Untere Au, Frastanz — Photo: böhringer friedrich · CC BY-SA 3.0 at · Wikimedia Commons

Water quality

EU classification: excellent · Visibility depth: 2.4 m

Nearby waters

Ill, Gisingen · 5.9 km away12.9 °C Baggersee Paspels, Rankweil, Rankweil · 7.2 km away24.0 °C Frutz, Sulz · 7.5 km away17.0 °C Liechtensteiner Binnenkanal, Ruggell · 8.8 km away13.3 °C Rheinauen, Hohenems, Hohenems · 16.1 km away23.8 °C

Frequently asked questions

Can you swim at Untere Au right now?
The current water temperature is 20.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Untere Au?
Currently 20.7 °C (updated continuously).

How is the water quality at Untere Au?
The official classification is: excellent.

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