Grosettjern water temperature
Grosettjern · Lake
The current water temperature at Grosettjern is 12.9 °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.
Measurement series & statistics
This measurement series includes 1116 data points since July 3, 2026.
Lowest recorded value: 11.9 °C on August 11, 2026 · highest value: 20.8 °C on July 17, 2026.
In September, temperatures have ranged between 12.9 °C and 13.3 °C.
The current value is 0.1 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Grosettjern right now?
The current water temperature is 12.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Grosettjern?
Currently 12.9 °C (updated continuously).
How warm is at Grosettjern in September?
In September, the water temperature recently averaged 13.0 °C.
When is the water warmest at Grosettjern?
Across the measurement record, July is on average the warmest month (16.7 °C).
