Themse water temperature
Themse, Ham & Kingston · River
The current water temperature at Themse is 19.5 °C (as of September 9, 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 9 data points since July 22, 2026.
Lowest recorded value: 19.5 °C on September 9, 2026 · highest value: 24.1 °C on August 15, 2026.
In September, temperatures have ranged between 19.5 °C and 20.1 °C.
Nearby waters
More measuring points: Themse
Frequently asked questions
Can you swim at Themse right now?
The current water temperature is 19.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Themse?
Currently 19.5 °C (updated continuously).
