Den Helder water temperature
Den Helder, Marsdiep · River
The current water temperature at Den Helder is 18.0 °C (as of September 20, 2026, source: Rijkswaterstaat).
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 778 data points since July 22, 2026.
Lowest recorded value: 17.5 °C on September 11, 2026 · highest value: 22.5 °C on August 4, 2026.
In September, temperatures have ranged between 17.5 °C and 19.8 °C.
The current value is 0.8 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Den Helder right now?
The current water temperature is 18.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Den Helder?
Currently 18.0 °C (updated continuously).
How warm is at Den Helder in September?
In September, the water temperature recently averaged 18.8 °C.
When is the water warmest at Den Helder?
Across the measurement record, August is on average the warmest month (20.8 °C).
