Herthasee water temperature

Herthasee · Lake

The current water temperature at Herthasee is 22.8 °C (as of July 22, 2026, source: Badegewässer-Atlas Rheinland-Pfalz (LfU, ODGRP)).

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

22.8 °C

Measured: July 22, 2026 · continuously updated

💧 Water 22.8° · ☀️ Air 17.3°

Herthasee — Photo: Andreas Dengs · CC BY-SA 3.0 · Wikimedia Commons

Water quality

EU classification: excellent · Visibility depth: 1.6 m

Nearby waters

Baggersee Diez · 6.4 km away23.8 °C Postweiher · 23.3 km away19.5 °C Klingelwiese · 23.5 km away20.2 °C Marother Weiher · 28.8 km away20.9 °C Krombachtalsperre · 32.9 km away18.0 °C

Frequently asked questions

Can you swim at Herthasee right now?
The current water temperature is 22.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Herthasee?
Currently 22.8 °C (updated continuously).

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

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