Donau water temperature

Donau, Grein · River

The current water temperature at Donau is 20.1 °C (as of September 1, 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.

20.1 °C

Measured: September 1, 2026 · continuously updated

💧 Water 20.1° · ☀️ Air 15.6° · high today 24.7°

Temperature trend of recent weeks

Donau — Photo: Giorgio Galeotti · CC BY-SA 4.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 829 data points since July 9, 2026.

Lowest recorded value: 19.8 °C on August 27, 2026 · highest value: 24.8 °C on August 9, 2026.

Nearby waters

Klambach, Sturmmühle · 6.1 km away18.8 °C Sarmingbach, Waldhausen (Seeausfluß) · 9.5 km away19.6 °C Waldhausen Badesee, Waldhausen im Strudengau · 9.7 km away21.0 °C Isper, Isperdorf 2 · 11.2 km away18.0 °C Naarn, Haid · 13.0 km away20.0 °C

More measuring points: Donau

Oberndorf23.2 °C Oberndorf23.2 °C Passau-Donau23.0 °C Passau Donau23.0 °C Vilshofen23.0 °C Vilshofen23.0 °C

Frequently asked questions

Can you swim at Donau right now?
The current water temperature is 20.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Donau?
Currently 20.1 °C (updated continuously).

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