Themse water temperature

Themse, Wallingford · River

The current water temperature at Themse is 17.8 °C (as of September 23, 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.

17.8 °C

Measured: September 23, 2026 · continuously updated

💧 Water 17.8° · ☀️ Air 11.8° · high today 14.4°

Temperature trend of recent weeks

Themse — Photo: Bill Nicholls · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 10 data points since August 28, 2026.

Lowest recorded value: 17.8 °C on September 23, 2026 · highest value: 20.7 °C on August 28, 2026.

Nearby waters

Themse, Pangbourne · 12.9 km away17.6 °C Themse, Wolvercote · 23.4 km away17.2 °C Frensham Great Pond · 54.3 km away17.9 °C Brent, Hanwell · 54.7 km away15.3 °C Thames, Brentford Barge · 58.1 km away17.7 °C

More measuring points: Themse

Ham & Kingston19.8 °C Pangbourne17.6 °C Wolvercote17.2 °C

Frequently asked questions

Can you swim at Themse right now?
The current water temperature is 17.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Themse?
Currently 17.8 °C (updated continuously).

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