St. Johns River at Jacksonville, Florida · River
The current water temperature at St. Johns River at Jacksonville is 30.1 °C (as of July 18, 2026, source: USGS).
Can you swim at St. Johns River at Jacksonville right now?
The current water temperature is 30.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at St. Johns River at Jacksonville?
Currently 30.1 °C (updated continuously).
How warm is at St. Johns River at Jacksonville in July?
In July, the water temperature recently averaged 30.9 °C.