Merced River A Happy Isles Bridge near Yosemite, California water temperature
Merced River A Happy Isles Bridge near Yosemite, California · River
The current water temperature at Merced River A Happy Isles Bridge near Yosemite is 14.5 °C (as of September 1, 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.
Measurement series & statistics
This measurement series includes 115 data points since July 9, 2026.
Lowest recorded value: 13.5 °C on August 30, 2026 · highest value: 19.2 °C on July 24, 2026.
In September, temperatures have ranged between 14.5 °C and 14.8 °C.
The current value is 0.2 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Merced River A Happy Isles Bridge near Yosemite right now?
The current water temperature is 14.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Merced River A Happy Isles Bridge near Yosemite?
Currently 14.5 °C (updated continuously).
How warm is at Merced River A Happy Isles Bridge near Yosemite in September?
In September, the water temperature recently averaged 14.7 °C.
When is the water warmest at Merced River A Happy Isles Bridge near Yosemite?
Across the measurement record, July is on average the warmest month (16.6 °C).
