Nelson Lake
Lake · 9,635 ft · Yosemite corridor
Nelson Lake sits at 9,635 feet in the Yosemite corridor's high Sierra, a glacial basin fed by snowmelt and ringed by granite. Winter and spring conditions dominate; wind funnels across the open water most afternoons.
Nelson Lake faces persistent afternoon wind; the 30-day average is 12 mph, but gusts regularly reach 33 mph by late day. Morning calm typically holds through mid-morning before thermal heating stirs the basin. Cold dominates; the 30-day average temperature is 24 degrees F. Snow lingers into early summer.
Over the past 30 days, Nelson Lake has averaged a NoGo Score of 33 with temperatures around 24 degrees F and winds averaging 12 mph. The week ahead will show if spring warming begins to push daytime temperatures higher and whether afternoon wind patterns relax. Pay close attention to wind peaks and temperature swings as the season transitions.
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About Nelson Lake
Nelson Lake lies in the high Sierra backcountry east of Yosemite Valley, accessible via Highway 120 (Tioga Pass Road) and trailheads in the Inyo National Forest. The lake sits in a north-south trending drainage at 9,635 feet elevation, surrounded by steep granite walls and seasonal snowpack. Primary approach is from the Lee Vining side via the Inyo corridor; allow 3 to 4 hours of drive time from Highway 395. Winter and early spring require mountain passes to be open and parking lots to be staffed; check road conditions before departing.
Nelson Lake experiences classic high-Sierra spring and winter weather. The 30-day average temperature of 24 degrees F reflects persistent cold; the 365-day maximum of 38 degrees F shows brief summer warmth. Afternoon wind is the dominant pattern; average 12 mph masks gusts to 33 mph that funnel through the basin by mid-afternoon. Crowds remain low (6.0 average on a 1 to 100 scale) because access is limited by snow closure and weather severity. Late spring and early fall offer the narrowest window of stable conditions.
Nelson Lake suits backcountry skiers, mountaineers, and ice-climbing parties in winter and spring. Kayakers and anglers target the brief summer window. Wind exposure rules out open-water activities most afternoons; head to the lake before 11 am or expect sustained gusts that make paddling dangerous. Avalanche terrain surrounds the approach and the basin; consult the SAC avalanche forecast before any winter trip. Parking is minimal and weather-dependent; arrive early on rare calm days.
Nearby high-Sierra alternatives include Mono Basin lakes (Tioga Lake, Grant Lake) and Yosemite Park waters (Cathedral Lakes, Tenaya Lake). Mono Basin options sit slightly lower and often face less afternoon wind. Tioga Lake, the nearest large water body, has better road access but similar wind exposure. Nelson Lake rewards solo mountaineers and small parties willing to accept isolation and alpine conditions; it is not a casual day-use lake.