Heiderbergsee water temperature

Heiderbergsee, Heiderbergsee – Badestrand · Lake

The current water temperature at Heiderbergsee is 21.8 °C (as of September 8, 2026, source: Badegewässer NRW (LANUK)).

Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.

21.8 °C

Measured: September 8, 2026 · continuously updated

💧 Water 21.8° · ☀️ Air 21.3° · high today 22.7°

Temperature trend of recent weeks

Heiderbergsee — Photo: dronepicr · CC BY 2.0 · Wikimedia Commons

Water quality

EU classification: excellent · Visibility depth: 2.0 m

Nearby waters

Bleibtreusee, Bleibtreusee – Badestrand · 2.0 km away21.4 °C Liblarer See, Liblarer See – Badestrand · 3.0 km away21.4 °C Otto-Maigler-See, Otto-Maigler-See – Badestrand · 6.1 km away22.0 °C Erft, Bliesheim · 6.6 km away15.5 °C Liblarer Mühlengraben, Bliesheim_2 · 6.7 km away15.3 °C

Frequently asked questions

Can you swim at Heiderbergsee right now?
The current water temperature is 21.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Heiderbergsee?
Currently 21.8 °C (updated continuously).

How is the water quality at Heiderbergsee?
The official classification is: excellent.

← All waters · Warmest lakes to swim today · Water temperature in Germany