Gjersjøen · Lake
The current water temperature at Gjersjøen is 23.3 °C (as of July 18, 2026, source: official monitoring networks).
Can you swim at Gjersjøen right now?
The current water temperature is 23.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Gjersjøen?
Currently 23.3 °C (updated continuously).
How warm is at Gjersjøen in July?
In July, the water temperature recently averaged 23.4 °C.