Upper Cathedral Lake
Lake · Yosemite corridor
Upper Cathedral Lake sits at 9,610 feet in the Yosemite corridor's high Sierra, a glacially-carved alpine lake ringed by cathedral-grade granite walls. Wind patterns and exposure dominate the experience.
Wind funnels across the open water by mid-afternoon, peaking in the 3 to 6 pm window. Morning hours are consistently calmer. Cold at elevation; the 30-day average temperature is 24 degrees Fahrenheit. Expect turbulent conditions on windy days; sheltered coves and eastern shores stay quieter.
Over the past 30 days, the average wind has held at 12 mph with gusts to 33 mph; the average temperature has been 24 degrees Fahrenheit and the 30-day average NoGo Score is 16.0. The week ahead will track typical late-spring patterns for this elevation: cold mornings warming through midday, afternoon wind onset by late afternoon, and moderate crowding on weekends as Highway 120 access improves.
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About Upper Cathedral Lake
Upper Cathedral Lake occupies a basin below the Cathedral Range in the Yosemite corridor, accessed primarily via the Cathedral Lakes trail from Tenaya Lake. The lake sits at 9,610 feet on the eastern slope of the Sierra Nevada divide. The standard approach from Tenaya Lake trailhead is the most direct route; Highway 120 (Tioga Road) provides the gateway access from the west. The lake's position in the high-Sierra corridor places it in a zone of frequent wind exposure and persistent cold, even as lower elevations in Yosemite Valley moderate.
Conditions at Upper Cathedral Lake track the high-altitude Sierra pattern: cold mean temperatures around 24 degrees Fahrenheit over the past 30 days, with the 30-day average wind speed at 12 mph and gusts exceeding 33 mph on windy systems. The rolling 365-day record shows minimum temperatures near 12 degrees and maximum winds of 33 mph. Spring and early summer (May through June) bring variable wind, occasional snowpack at the shore, and moderate crowding. Late September through early October offer the most stable conditions and clearest skies. Winter (December through March) locks the lake under snow and ice; access is technical or impossible.
Upper Cathedral Lake suits mountaineers, high-altitude hikers, and climbers working the Cathedral Range. Paddlers and swimmers must assess the morning window; afternoon wind turns the lake chaotic. The 9,610-foot elevation demands acclimatization and cold-weather gear year-round. Parking at Tenaya Lake trailhead fills quickly on weekends during the accessible season. Plan for morning arrival to secure a spot and leverage calm water before wind onset. The lake is best for experienced mountain users comfortable with exposed alpine terrain, cold water, and rapid weather swings.
Cathedral Lakes Lower, immediately downslope, offers a lower-elevation alternative with warmer water and slightly less wind exposure. Tenaya Lake itself, at the trailhead, provides a larger water body and faster wind response due to open fetch. Visitors planning the Cathedral range traverse should sequence Upper Cathedral Lake early in the day and plan descent before afternoon wind. The Yosemite corridor as a whole is dominated by weekend crowds from late May onward; mid-week visits eliminate this pressure entirely.