Tuolumne River near Hetch Hetchy, California water temperature

Tuolumne River near Hetch Hetchy, California · River

The current water temperature at Tuolumne River near Hetch Hetchy is 10.8 °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.

10.8 °C

Measured: August 29, 2026 · continuously updated

💧 Water 10.8° · ☀️ Air 20.6°

Temperature trend of recent weeks

Nearby waters

Eleanor C near Hetch Hetchy, California · 8.2 km away23.4 °C Cherry C below Valley Dam near Hetch Hetchy, California · 11.0 km away11.7 °C Tuolumne River A Grand Cyn of Tuolumne above Hetch Hetchy · 12.4 km away19.8 °C Tuolumne River above Early Intake near Mather, California · 14.6 km away18.1 °C Cherry C near Early Intake, California · 15.2 km away20.3 °C

Frequently asked questions

Can you swim at Tuolumne River near Hetch Hetchy right now?
The current water temperature is 10.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Tuolumne River near Hetch Hetchy?
Currently 10.8 °C (updated continuously).

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