Yosemite Valley

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Water Temperature in Yosemite Valley in Merced River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Yosemite Valley in Merced River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature in Yosemite Valley: General Trends and Swimming Opportunities

Yosemite Valley, located in Yosemite National Park, is home to the Merced River, a popular waterway for visitors to explore. The water temperature in the Merced River varies depending on the season, with the warmest temperatures occurring during the summer months. From late spring to early fall, the water temperature generally ranges from 60°F (15°C) to 70°F (21°C), which can feel refreshing on hot days, especially given the warm temperatures in the valley, which can exceed 90°F (32°C). These temperatures make the river a suitable spot for short swims, wading, or cooling off after a hike, though the water can still feel cool compared to warmer lakes or pools.

In the winter months, the temperature of the Merced River drops significantly, typically ranging from 40°F (4°C) to 50°F (10°C), making swimming very uncomfortable and unsafe. The water is often quite cold, and the current can be stronger during this time, which increases the risk for swimmers. As a result, swimming in the river is not recommended during the colder months, and other activities such as cross-country skiing, snowshoeing, and winter hiking are more popular during this time of year.

The Merced River offers a unique setting for water-based activities, but visitors should be cautious of the water’s chill and swift currents in certain sections. For those seeking a more controlled swimming environment, nearby lakes, like Mirror Lake, offer calmer waters with warmer temperatures during the summer, though the river itself remains an iconic feature for those looking to experience Yosemite's natural beauty up close. The river is also popular for other activities such as rafting and kayaking, particularly in areas where the current is not as strong.

Geographical Location of Yosemite Valley

Frequently Asked Questions About Yosemite Valley and its Water Temperatures