Oste, Achthöfener Fleth Siel · River
The current water temperature at Oste is 17.1 °C (as of September 20, 2026, source: PEGELONLINE).
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 707 data points since July 22, 2026.
Lowest recorded value: 12.3 °C on September 7, 2026 · highest value: 29.4 °C on August 4, 2026.
In September, temperatures have ranged between 12.3 °C and 23.1 °C.
The current value is 0.7 °C below the September average of this series.
Can you swim at Oste right now?
The current water temperature is 17.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Oste?
Currently 17.1 °C (updated continuously).
How warm is at Oste in September?
In September, the water temperature recently averaged 17.8 °C.
When is the water warmest at Oste?
Across the measurement record, August is on average the warmest month (20.3 °C).