John's River water temperature
John's River, Adelphi Quay · River
The current water temperature at John's River is 8.9 °C (as of September 1, 2026, source: official monitoring networks).
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.
Measurement series & statistics
This measurement series includes 1434 data points since July 3, 2026.
Lowest recorded value: 4.7 °C on August 14, 2026 · highest value: 9.2 °C on July 16, 2026.
In September, temperatures have ranged between 5.1 °C and 8.9 °C.
The current value is 2.1 °C above the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at John's River right now?
The current water temperature is 8.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at John's River?
Currently 8.9 °C (updated continuously).
How warm is at John's River in September?
In September, the water temperature recently averaged 6.8 °C.
When is the water warmest at John's River?
Across the measurement record, August is on average the warmest month (7.0 °C).
