Sieg water temperature

Sieg, Eitorf · River

The current water temperature at Sieg is 19.6 °C (as of August 31, 2026, source: LANUV NRW).

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.

19.6 °C

Measured: August 31, 2026 · continuously updated

💧 Water 19.6° · ☀️ Air 13.2° · high today 19.4°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 475 data points since July 3, 2026.

Lowest recorded value: 17.1 °C on August 24, 2026 · highest value: 28.1 °C on July 14, 2026.

Nearby waters

Bröl, Broel · 8.7 km away17.8 °C Hanfbach, Geisbach · 10.1 km away16.2 °C Freibad Thalhauser Mühle · 16.5 km away21.5 °C Agger, Lohmar · 18.4 km away18.2 °C Blauer See, Vettelschoß · 18.8 km away21.9 °C

More measuring points: Sieg

Obernetphen16.1 °C

Frequently asked questions

Can you swim at Sieg right now?
The current water temperature is 19.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Sieg?
Currently 19.6 °C (updated continuously).

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