Itchen water temperature
Itchen, Gaters Mill · River
The current water temperature at Itchen is 15.5 °C (as of September 20, 2026, source: Environment Agency).
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 387 data points since September 1, 2026.
Lowest recorded value: 13.9 °C on September 18, 2026 · highest value: 18.0 °C on September 4, 2026.
In September, temperatures have ranged between 13.9 °C and 18.0 °C.
The current value is 0.5 °C below the September average of this series.
Nearby waters
More measuring points: Itchen
Frequently asked questions
Can you swim at Itchen right now?
The current water temperature is 15.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Itchen?
Currently 15.5 °C (updated continuously).
How warm is at Itchen in September?
In September, the water temperature recently averaged 16.0 °C.
