Lake Mary is a lake in Mono County, California at about 2,733 m (8,967 ft) above sea level. It lies in or next to Devils Postpile National Monument, so park hours, fees and rules apply. The nearest town is Mammoth Lakes, about 5.8 km (3.6 mi) away (Lake Mary lies SSW of town).
Lake Mary is a freshwater lake and the largest of the Mammoth Lakes in Mono County, California. Lake Mary has a campground on its northwest end and can be used for rainbow trout, brook, and brown trout fishing. The lake also features two marinas with motorboat and kayak rental. The lake is accessible from the town of Mammoth Lakes via Lake Mary Road and is surrounded by the scenic Around Lake Mary Road. According to the Eastern California Museum's interview with Maude Kemp (resident of Independence, California, born 1895), Lake Mary was named after Maude's grandmother, Mary Calvert (wife of Maude's grandfather, George Calvert).From the Wikipedia article “Lake Mary (California)”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Lake Mary the sunrise point swings a long way through the year: about 59° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 301° (WNW) in June to 241° (WSW) in December, and the midday sun climbs to 76° in summer but only 29° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:00 AM | 90° E | 7:08 PM | 271° W | 52° | 12h 08m |
| June solstice (Jun 21) | 5:36 AM | 59° ENE | 8:21 PM | 301° WNW | 76° | 14h 46m |
| September equinox (Sep 22) | 6:45 AM | 89° E | 6:55 PM | 271° W | 53° | 12h 10m |
| December solstice (Dec 21) | 7:08 AM | 120° ESE | 4:42 PM | 241° WSW | 29° | 9h 34m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Lakes reflect best in calm air — usually the first hour after sunrise, before breezes ripple the surface.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:42 AM | 7:10 AM | 7:50 AM | 4:22 PM | 5:02 PM | 5:30 PM | 9h 51m |
| February | 6:20 AM | 6:46 AM | 7:23 AM | 4:59 PM | 5:36 PM | 6:03 PM | 10h 49m |
| March | 6:42 AM | 7:08 AM | 7:43 AM | 6:29 PM | 7:04 PM | 7:30 PM | 11h 56m |
| April | 5:55 AM | 6:22 AM | 6:57 AM | 6:56 PM | 7:32 PM | 7:59 PM | 13h 10m |
| May | 5:18 AM | 5:47 AM | 6:25 AM | 7:22 PM | 7:59 PM | 8:28 PM | 14h 12m |
| June | 5:04 AM | 5:35 AM | 6:14 AM | 7:41 PM | 8:20 PM | 8:51 PM | 14h 45m |
| July | 5:17 AM | 5:47 AM | 6:25 AM | 7:40 PM | 8:18 PM | 8:48 PM | 14h 31m |
| August | 5:45 AM | 6:13 AM | 6:49 AM | 7:14 PM | 7:50 PM | 8:18 PM | 13h 37m |
| September | 6:13 AM | 6:39 AM | 7:13 AM | 6:31 PM | 7:05 PM | 7:32 PM | 12h 27m |
| October | 6:38 AM | 7:05 AM | 7:40 AM | 5:45 PM | 6:20 PM | 6:46 PM | 11h 15m |
| November | 6:09 AM | 6:37 AM | 7:15 AM | 4:08 PM | 4:46 PM | 5:14 PM | 10h 10m |
| December | 6:35 AM | 7:05 AM | 7:45 AM | 3:59 PM | 4:40 PM | 5:09 PM | 9h 35m |
Local time (America/Los Angeles), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Lake Mary, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.3 hours on a moonless night), and the core peaks around 24° above the southern horizon. Our light-pollution model puts the sky at about Bortle 4 (rural / suburban transition), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -1° | — |
| February | 4:54 AM – 5:14 AM | 0.3 | 13° | SE → SE |
| March | 4:01 AM – 5:31 AM | 1.5 | 20° | SE → SSE |
| April | 2:04 AM – 4:44 AM | 2.7 | 23° | SE → S |
| May | 12:03 AM – 3:53 AM | 3.8 | 24° | SE → S |
| June | 10:13 PM – 3:33 AM | 5.3 | 24° | SE → SSW |
| July | 10:07 PM – 2:07 AM | 4.0 | 24° | SSE → SW |
| August | 9:27 PM – 12:07 AM | 2.7 | 23° | S → SW |
| September | 8:34 PM – 10:04 PM | 1.5 | 20° | SSW → SW |
| October | 7:47 PM – 8:07 PM | 0.3 | 13° | SW → SW |
| November | Below 10° in darkness | — | 1° | — |
| December | Below 10° in darkness | — | -19° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 4 Bortle 4 — Rural / suburban transition. Light domes are visible in several directions; the Milky Way is clear but lacks detail near the horizon. Modeled zenith brightness ≈ 21.13 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show August as the clearest month (about 15% average cloud cover) and December as the cloudiest (54%). July is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 60 | 64 | 67 | 72 | 86 | 91 | 96 | 91 | 90 | 82 | 74 | 62 |
| Low °F | -9 | -7 | -4 | -3 | 15 | 24 | 39 | 34 | 23 | 14 | -9 | -12 |
| Precip. (in) | 4.4 | 4.7 | 3.7 | 2.4 | 1.3 | 0.4 | 0.4 | 0.2 | 0.2 | 1.4 | 2.4 | 4.8 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this lake
- Expose for the brighter sky; reflections are typically half a stop to a stop darker.
- After sunset, long exposures smooth wind ripples into glass.
- For mirror reflections, get low and close to the water; the reflection grows with a lower camera.
- A polarizer can remove reflections to show the lakebed — or keep them, depending on rotation.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Autumn mornings bring mist and fall color; high-elevation lakes are usually ice-free only from early summer to mid-autumn.
Suggested gear: Tripod, Circular polarizer, Wide-angle lens, Waterproof boots. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
National Park Service rules. Under federal law (54 U.S.C. 100905), still photography in National Park Service areas needs a permit only when it (1) takes place where members of the public are not allowed, (2) uses models, sets or props that are not part of the location's natural or cultural resources or administrative facilities, or (3) would cause the park to incur additional administrative costs to monitor the activity. Ordinary visitor and most landscape photography needs no permit. Commercial filming rules are separate and have changed in recent years — confirm current requirements with the park before a paid shoot.
Drones: Launching, landing or operating unmanned aircraft (drones) is prohibited in National Park Service units under a 2014 Superintendent's closure (36 CFR 1.5), except where a park has issued specific written approval. Flying from outside the boundary over park land can also violate park rules and disturb wildlife.
Nearby photo spots
Other locations within 25 km of Lake Mary, closest first.
Waterfall
Natural Arch
Mountain Peak
Hot Spring
Waterfall
Mountain PassHot SpringWaterfallHot SpringCampgrounds nearby (Recreation.gov)
- Lake Mary Campground598 m · reservable
- Coldwater Campground - Inyo Nf (Ca)651 m · reservable
- Twin Lakes Campground1.5 km (0.9 mi) · reservable
- New Shady Rest Campground6.1 km (3.8 mi) · reservable
- Sherwin Creek6.4 km (4.0 mi) · reservable
FAQ
When is the best time to photograph Lake Mary?
What time is golden hour at Lake Mary?
Where does the sun rise and set at Lake Mary?
Can you see the Milky Way from Lake Mary?
Do you need a permit to photograph at Lake Mary?
How far is Lake Mary from Mammoth Lakes?
Sources
Location data: Wikidata, USGS GNIS / GeoNames, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.