Viertjern water temperature
Viertjern · Lake
The current water temperature at Viertjern is 6.8 °C (as of September 18, 2026, source: official monitoring networks).
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
Measurement series & statistics
This measurement series includes 605 data points since July 22, 2026.
Lowest recorded value: 6.6 °C on September 17, 2026 · highest value: 18.1 °C on July 22, 2026.
In September, temperatures have ranged between 6.6 °C and 12.3 °C.
The current value is 2.5 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Viertjern right now?
The current water temperature is 6.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Viertjern?
Currently 6.8 °C (updated continuously).
How warm is at Viertjern in September?
In September, the water temperature recently averaged 9.3 °C.
When is the water warmest at Viertjern?
Across the measurement record, July is on average the warmest month (12.4 °C).
