Viertjern · Lake
The current water temperature at Viertjern is 10.9 °C (as of September 1, 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.
This measurement series includes 1006 data points since July 4, 2026.
Lowest recorded value: 7.1 °C on August 11, 2026 · highest value: 22.9 °C on July 16, 2026.
Can you swim at Viertjern right now?
The current water temperature is 10.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Viertjern?
Currently 10.9 °C (updated continuously).