Snow Lakes
Lake · Mammoth Lakes corridor
Snow Lakes sits at 11,371 feet in the Mammoth Lakes corridor, a high-altitude alpine lake exposed to afternoon wind and cold. Best visited on calm mornings before thermal currents build.
Wind averages 13 mph and regularly peaks above 30 mph by afternoon, driven by thermal heating of the surrounding basin. Morning conditions are consistently calmer. Expect surface chop and spray on the exposed water; afternoon visits sacrifice both comfort and visibility. Snow Lakes catches afternoon thermals harder than sheltered coves lower in the corridor.
Over the last 30 days, conditions have averaged a NoGo Score of 16.0 with temperatures holding at 18°F and wind running 13 mph on average. Afternoon gusts still reach 39 mph on rough days. The week ahead will follow the same pattern: calm at dawn, building wind from mid-morning onward. Plan for the coldest, windiest part of your day to occur after noon.
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About Snow Lakes
Snow Lakes occupies a basin east of the main Mammoth Lakes cluster in California's Sierra Nevada. Access is via Highway 203 from US 395 near Mammoth Junction; the drive from the valley floor takes 45 minutes to an hour. The lake sits in the high alpine zone at 11,371 feet, surrounded by granite ridges and sparse whitebark pine. Snow Lakes is less frequented than Mamie, Mary, or Horseshoe Lakes directly below it, making it a destination for visitors willing to climb elevation and accept colder, windier conditions in exchange for solitude.
Temperature and wind follow high-alpine seasonality. Winter brings sustained cold; the 365-day minimum is 4°F. Spring and early summer see rapid warming but persistent afternoon wind, with the 30-day average wind of 13 mph typical of thermal patterns at this elevation. By late August and September, overnight temperatures cool and morning calm windows lengthen. Wind remains the dominant feature year-round; max gusts in the rolling 30-day record hit 39 mph. Crowding stays low (4.0 average on the 30-day rolling window), partly because exposure and weather discourage casual visitors. Parking is limited; arrive very early or plan a weekday trip.
Snow Lakes suits cold-water swimmers, mountaineers accustomed to alpine exposure, and photographers seeking high-altitude alpine light. The site is best for those comfortable with short warm windows and long wind exposure. Experienced alpine hikers and climbers use Snow Lakes as a staging point or turnaround on longer traverses of the Mammoth crest. Afternoon wind makes the lake unsuitable for paddling or extended water time; head here on calm mornings and plan a descent or departure by midday. The cold (18°F average over 30 days) demands proper insulation and quick drying after immersion.
Nearby alternatives include Mamie, Mary, and Horseshoe Lakes at lower elevation and shorter approach times; these offer warmer water and less afternoon wind. Lake George sits to the southwest and offers similar alpine exposure with a slightly different aspect. The Mammoth Lakes corridor as a whole provides a spectrum of elevations and wind exposures; Snow Lakes represents the highest, coldest, windiest extreme. For shelter and warmer conditions, drop to the main cluster. For solitude and unfiltered alpine conditions, Snow Lakes delivers.