Sieg water temperature
Sieg, Eitorf · River
The current water temperature at Sieg is 16.7 °C (as of September 20, 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.
Measurement series & statistics
This measurement series includes 468 data points since July 22, 2026.
Lowest recorded value: 16.7 °C on September 19, 2026 · highest value: 26.7 °C on August 4, 2026.
In September, temperatures have ranged between 16.7 °C and 22.3 °C.
The current value is 2.4 °C below the September average of this series.
Nearby waters
More measuring points: Sieg
Frequently asked questions
Can you swim at Sieg right now?
The current water temperature is 16.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Sieg?
Currently 16.7 °C (updated continuously).
How warm is at Sieg in September?
In September, the water temperature recently averaged 19.1 °C.
When is the water warmest at Sieg?
Across the measurement record, August is on average the warmest month (21.7 °C).
