Long Branch water temperature
Long Branch, Olley Lane near Fairfax, Virginia · River
The current water temperature at Long Branch is 23.4 °C (as of September 21, 2026, source: USGS).
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 95 data points since August 26, 2026.
Lowest recorded value: 22.1 °C on September 8, 2026 · highest value: 25.5 °C on September 1, 2026.
In September, temperatures have ranged between 22.1 °C and 25.5 °C.
The current value is 0.4 °C below the September average of this series.
Nearby waters
More measuring points: Long Branch
Frequently asked questions
Can you swim at Long Branch right now?
The current water temperature is 23.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Long Branch?
Currently 23.4 °C (updated continuously).
How warm is at Long Branch in September?
In September, the water temperature recently averaged 23.8 °C.
