BrrChecker

Isar water temperature

Isar, Puppling · River

The current water temperature at Isar is 14.3 °C (as of September 20, 2026, source: GKD Bayern).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

14.3 °C
Measured: September 20, 2026 · continuously updated
💧 Water 14.3° · ☀️ Air 19.2° · high today 22.1°
Temperature trend of recent weeks
Isar
Photo: Walter Berg · CC BY 3.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 947 data points since July 22, 2026.

Lowest recorded value: 12.1 °C on September 19, 2026 · highest value: 23.6 °C on August 3, 2026.

In September, temperatures have ranged between 12.1 °C and 20.2 °C.

The current value is 1.6 °C below the September average of this series.

Nearby waters

More measuring points: Isar

Frequently asked questions

Can you swim at Isar right now?
The current water temperature is 14.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Isar?
Currently 14.3 °C (updated continuously).

How warm is at Isar in September?
In September, the water temperature recently averaged 15.9 °C.

When is the water warmest at Isar?
Across the measurement record, August is on average the warmest month (18.1 °C).

Open in the BrrChecker app

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