Willamette River at Portland, Oregon · River
The current water temperature at Willamette River at Portland is 23.0 °C (as of August 29, 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.
Can you swim at Willamette River at Portland right now?
The current water temperature is 23.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Willamette River at Portland?
Currently 23.0 °C (updated continuously).