Lyman Glacier is a glacier in Chelan County, Washington at about 1,989 m (6,526 ft) above sea level. It is part of Okanogan National Forest. It sits roughly 53 km (33 mi) E of Darrington.
Lyman Glacier is in Wenatchee National Forest in the U.S. state of Washington and is just northeast of Chiwawa Mountain. Between the years 1890 and 2008, Lyman Glacier has retreated 1,310 m (4,300 ft) and lost 86 percent of its area, a reduction in its surface from 1.41 to .02 km2 (0.5444 to 0.0077 sq mi). Lyman Glacier terminates at a proglacial lake and a series of smaller lakes as well as a pronounced terminal moraine indicate where the glacier once extended to.From the Wikipedia article “Lyman Glacier (North Cascades)”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Lyman Glacier the sunrise point swings a long way through the year: about 52° (NE) at the June solstice and 126° (SE) in late December. Sunset moves from 308° (NW) in June to 235° (SW) in December, and the midday sun climbs to 65° in summer but only 18° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:07 AM | 89° E | 7:16 PM | 271° W | 42° | 12h 09m |
| June solstice (Jun 21) | 5:04 AM | 52° NE | 9:08 PM | 308° NW | 65° | 16h 04m |
| September equinox (Sep 22) | 6:51 AM | 89° E | 7:03 PM | 271° W | 42° | 12h 12m |
| December solstice (Dec 21) | 7:52 AM | 126° SE | 4:13 PM | 235° SW | 18° | 8h 21m |
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
Ice shows its blue best under overcast skies or in shade; bright sun turns glaciers white and flat.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:15 AM | 7:50 AM | 8:41 AM | 3:46 PM | 4:37 PM | 5:13 PM | 8h 48m |
| February | 6:39 AM | 7:11 AM | 7:56 AM | 4:42 PM | 5:26 PM | 5:58 PM | 10h 15m |
| March | 6:47 AM | 7:18 AM | 7:59 AM | 6:28 PM | 7:09 PM | 7:40 PM | 11h 52m |
| April | 5:42 AM | 6:14 AM | 6:56 AM | 7:12 PM | 7:54 PM | 8:27 PM | 13h 40m |
| May | 4:48 AM | 5:25 AM | 6:11 AM | 7:51 PM | 8:37 PM | 9:14 PM | 15h 12m |
| June | 4:22 AM | 5:04 AM | 5:52 AM | 8:17 PM | 9:06 PM | 9:48 PM | 16h 03m |
| July | 4:40 AM | 5:20 AM | 6:07 AM | 8:13 PM | 9:01 PM | 9:40 PM | 15h 41m |
| August | 5:25 AM | 5:59 AM | 6:42 AM | 7:36 PM | 8:19 PM | 8:53 PM | 14h 20m |
| September | 6:10 AM | 6:41 AM | 7:22 AM | 6:37 PM | 7:18 PM | 7:49 PM | 12h 37m |
| October | 6:52 AM | 7:24 AM | 8:06 AM | 5:34 PM | 6:16 PM | 6:48 PM | 10h 53m |
| November | 6:37 AM | 7:11 AM | 8:00 AM | 3:38 PM | 4:27 PM | 5:01 PM | 9h 15m |
| December | 7:12 AM | 7:48 AM | 8:42 AM | 3:17 PM | 4:11 PM | 4:47 PM | 8h 23m |
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 Lyman Glacier, the Milky Way core is visible in a dark sky from April through July. May gives the longest window (about 1.0 hours on a moonless night), and the core peaks around 13° above the southern horizon. Our light-pollution model puts the sky at about Bortle 3 (rural sky), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -6° | — |
| February | Below 10° in darkness | — | 5° | — |
| March | Below 10° in darkness | — | 9° | — |
| April | 3:41 AM – 4:11 AM | 0.5 | 12° | SSE → SSE |
| May | 1:45 AM – 2:45 AM | 1.0 | 13° | SSE → S |
| June | 12:30 AM – 1:30 AM | 1.0 | 13° | S → S |
| July | 11:51 PM – 12:41 AM | 0.8 | 12° | S → SSW |
| August | 10:26 PM – 10:46 PM | 0.3 | 11° | SSW → SSW |
| September | Below 10° in darkness | — | 9° | — |
| October | Below 10° in darkness | — | 4° | — |
| November | Below 10° in darkness | — | -5° | — |
| December | Below 10° in darkness | — | -20° | — |
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: 3 Bortle 3 — Rural sky. Some light domes sit on the horizon, but the Milky Way still looks complex overhead. Modeled zenith brightness ≈ 21.68 mag/arcsec². Aurora needs roughly Kp 4.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show July as the clearest month (about 42% average cloud cover) and November as the cloudiest (76%). August 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 | 45 | 47 | 56 | 68 | 78 | 87 | 87 | 89 | 85 | 76 | 54 | 43 |
| Low °F | -24 | -23 | -15 | -1 | 15 | 27 | 30 | 33 | 22 | 2 | -20 | -20 |
| Precip. (in) | 5.3 | 3.7 | 4.1 | 2.5 | 2.3 | 1.9 | 0.8 | 1.0 | 1.8 | 3.9 | 5.9 | 5.5 |
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 glacier
- Never walk on a glacier without training and gear; crevasses hide under snow bridges.
- Expose carefully: ice and snow fool meters into underexposure, so add +1 to +2 stops.
- A polarizer deepens the blue of glacial ice and the turquoise of meltwater lakes.
- Include a person or boat for scale — glaciers are much larger than they look.
- Boat tours to tidewater glaciers offer calving shots; use fast shutter speeds and a telephoto.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Summer offers access; late summer exposes the most bare ice before new snow.
Suggested gear: Telephoto lens, Polarizer, Waterproof shell, Spare batteries (cold drains them). Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Lyman Glacier, closest first.
Waterfall
Mountain Peak
Mountain Peak
Mountain Peak
Mountain Peak
GlacierGlacier
Fire Lookout
Hot SpringCampgrounds nearby (Recreation.gov)
- Alpine Meadows Campground14.5 km (9.0 mi) · reservable
- Nineteen Mile Campground17.5 km (10.9 mi) · reservable
- Nineteenmile Campground17.5 km (10.9 mi)
- Lucerne Campground23 km (14 mi)
- Rock Creek Campground24 km (15 mi) · reservable
FAQ
When is the best time to photograph Lyman Glacier?
What time is golden hour at Lyman Glacier?
Where does the sun rise and set at Lyman Glacier?
Can you see the Milky Way from Lyman Glacier?
Do you need a permit to photograph at Lyman Glacier?
How far is Lyman Glacier from Darrington?
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.