Gjersjøen water temperature

Gjersjøen · Lake

The current water temperature at Gjersjøen is 19.1 °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.

19.1 °C

Measured: September 1, 2026 · continuously updated

💧 Water 19.1° · ☀️ Air 15.0° · high today 20.0°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 1113 data points since July 3, 2026.

Lowest recorded value: 17.7 °C on July 8, 2026 · highest value: 26.2 °C on July 16, 2026.

In September, temperatures have ranged between 19.1 °C and 19.5 °C.

Nearby waters

Gjersjøelva, Skredderstubekken · 1.8 km away21.5 °C Gjersjøelva, Greverudbekken · 5.3 km away13.5 °C Alna, Kvernerbyen · 10.5 km away14.6 °C Akerselva, Elvebakken · 12.2 km away18.2 °C Årungelva, Årungen · 12.3 km away19.5 °C

Frequently asked questions

Can you swim at Gjersjøen right now?
The current water temperature is 19.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Gjersjøen?
Currently 19.1 °C (updated continuously).

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