Wurm, Kalkofen · River
The current water temperature at Wurm is 9.7 °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.
This measurement series includes 467 data points since July 22, 2026.
Lowest recorded value: 7.6 °C on August 30, 2026 · highest value: 12.7 °C on August 3, 2026.
In September, temperatures have ranged between 7.8 °C and 10.9 °C.
The current value is 0.1 °C above the September average of this series.
Can you swim at Wurm right now?
The current water temperature is 9.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Wurm?
Currently 9.7 °C (updated continuously).
How warm is at Wurm in September?
In September, the water temperature recently averaged 9.6 °C.
When is the water warmest at Wurm?
Across the measurement record, August is on average the warmest month (10.6 °C).