Lower Cathedral Lake
Lake · Yosemite corridor
Lower Cathedral Lake sits at 9,298 feet in the Yosemite corridor of California's Sierra Nevada. This glacially-carved alpine lake offers calmer morning conditions than the exposed terrain to the east.
Wind funnels off the lake by mid-afternoon, averaging 12 mph across the last month but gusting to 33 mph. Morning flatness gives way to chop by noon. Water temperature and air chill demand wetsuits year-round.
The 30-day average wind of 12 mph and low crowding score of 6.0 reflect this lake's remote position and high elevation. Over the year, temperatures swing from 12 degrees to 38 degrees Fahrenheit. Expect the next week to mirror recent patterns: calm mornings, wind-driven afternoons, and crowds well below popular valley lakes.
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About Lower Cathedral Lake
Lower Cathedral Lake sits in the High Sierra backcountry east of Yosemite Valley, accessible via the Cathedral Lakes Trail from Highway 120 near Tenaya Lake. The trail climbs steadily through subalpine forest and scree, gaining elevation as it approaches the two Cathedral Lakes. Lower Cathedral is the larger and lower of the pair, sitting at 9,298 feet. The drive to the trailhead takes 45 minutes from Yosemite Village; Highway 120 closure in winter forces long detours via Highway 140 or Highway 395. Early season (May and June) requires navigation through snowpack and creek crossings that can be dangerous at high flow.
This location experiences classic High Sierra weather: high wind exposure in afternoons, dramatic daily temperature swings, and short snow-free seasons. The 30-day average temperature of 24 degrees Fahrenheit reflects late-spring or early-fall conditions; mid-winter temperatures drop below 12 degrees, while peak summer highs reach 38 degrees. Wind averages 12 mph but gusts frequently to 33 mph by afternoon. Crowding remains light year-round, with the 30-day average of 6.0 reflecting its backcountry isolation. Snow typically lingers until late June; autumn storms arrive by late September. The lake itself stays frozen until mid-May in most years.
Lower Cathedral suits fast hikers, cold-water swimmers with wetsuits, and alpine photographers seeking solitude. Day hikers dominate in summer; backpackers use it as a camp stop en route to higher peaks. Wind and cold make this location challenging for casual swimmers or families; experienced hikers expect 8 to 10 hours round trip from the trailhead. Parking at the Cathedral Lakes trailhead fills early on summer weekends, but alternatives exist at nearby Tenaya Lake pullouts. Smoke from wildfires east of the Sierra crest can degrade air quality in late summer and early fall.
Cathedral Lake (the upper, smaller lake at higher elevation) offers an even more remote alternative one hour further up-trail. Tenaya Lake, a lower-elevation reservoir 15 minutes' drive south, provides easier access and warmer water but with significantly higher crowds. The Yosemite corridor as a whole sees peak visitation in July and August; visiting Lower Cathedral in late September or early May avoids crowds while still offering solid weather.