Located in Whatcom County, Washington, Sulphide Glacier is a glacier at about 2,126 m (6,975 ft) above sea level. The nearest town is Peaceful Valley, about 42 km (26 mi) away (Sulphide Glacier lies ESE of town).
Sulphide Glacier is in North Cascades National Park in the U.S. state of Washington, on the south slopes of Mount Shuksan. Descending 1.85 mi (2.98 km) from the summit tower of Mount Shuksan, it is connected to Crystal Glacier to the east. Sulphide Glacier descends from 8,600 to 5,600 ft (2,600 to 1,700 m). Sulphide Glacier is along the route taken when Mount Shuksan was first climbed in 1906. Both Sulphide and Crystal Glaciers have a series of 300-to-1,000-foot-high (91 to 305 m) cascades which are collectively referred to as Sulphide Basin Falls. Below these cascades lies Sulphide Lake, which empties over Sulphide Creek Falls, one of the highest waterfalls in North America with a nearly 2,200 ft (670 m) drop.From the Wikipedia article “Sulphide Glacier”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Sulphide 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 309° (NW) in June to 234° (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) | 7:10 AM | 89° E | 7:19 PM | 271° W | 41° | 12h 09m |
| June solstice (Jun 21) | 5:04 AM | 52° NE | 9:14 PM | 309° NW | 65° | 16h 10m |
| September equinox (Sep 22) | 6:54 AM | 89° E | 7:06 PM | 271° W | 41° | 12h 12m |
| December solstice (Dec 21) | 7:58 AM | 126° SE | 4:13 PM | 234° SW | 18° | 8h 15m |
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 | 7:19 AM | 7:55 AM | 8:47 AM | 3:46 PM | 4:38 PM | 5:14 PM | 8h 43m |
| February | 6:43 AM | 7:15 AM | 8:00 AM | 4:43 PM | 5:28 PM | 6:00 PM | 10h 12m |
| March | 6:49 AM | 7:21 AM | 8:02 AM | 6:30 PM | 7:12 PM | 7:43 PM | 11h 51m |
| April | 5:43 AM | 6:16 AM | 6:59 AM | 7:16 PM | 7:58 PM | 8:31 PM | 13h 42m |
| May | 4:48 AM | 5:26 AM | 6:12 AM | 7:55 PM | 8:42 PM | 9:20 PM | 15h 16m |
| June | 4:21 AM | 5:03 AM | 5:53 AM | 8:22 PM | 9:12 PM | 9:55 PM | 16h 09m |
| July | 4:40 AM | 5:20 AM | 6:08 AM | 8:18 PM | 9:06 PM | 9:46 PM | 15h 46m |
| August | 5:25 AM | 6:00 AM | 6:44 AM | 7:40 PM | 8:23 PM | 8:58 PM | 14h 23m |
| September | 6:12 AM | 6:44 AM | 7:25 AM | 6:40 PM | 7:21 PM | 7:53 PM | 12h 37m |
| October | 6:56 AM | 7:27 AM | 8:11 AM | 5:35 PM | 6:18 PM | 6:50 PM | 10h 51m |
| November | 6:42 AM | 7:16 AM | 8:06 AM | 3:38 PM | 4:28 PM | 5:02 PM | 9h 11m |
| December | 7:17 AM | 7:54 AM | 8:49 AM | 3:16 PM | 4:11 PM | 4:48 PM | 8h 17m |
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 Sulphide Glacier, the Milky Way core is visible in a dark sky from May through July. June gives the longest window (about 2.7 hours on a moonless night), and the core peaks around 12° above the southern horizon. Our light-pollution model puts the sky at about Bortle 2 (typical truly dark site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -5° | — |
| February | Below 10° in darkness | — | 4° | — |
| March | Below 10° in darkness | — | 9° | — |
| April | 3:56 AM – 4:06 AM | 0.2 | 11° | SSE → SSE |
| May | 1:53 AM – 2:43 AM | 0.8 | 12° | SSE → S |
| June | 11:54 PM – 2:34 AM | 2.7 | 12° | SSE → SSW |
| July | 12:02 AM – 12:42 AM | 0.7 | 12° | S → SSW |
| August | 10:32 PM – 10:32 PM | 0.0 | 10° | SSW → SSW |
| September | Below 10° in darkness | — | 8° | — |
| 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: 2 Bortle 2 — Typical truly dark site. The summer Milky Way shows rich structure; clouds look like black holes in the stars. Modeled zenith brightness ≈ 21.72 mag/arcsec². Aurora needs roughly Kp 4.0+ 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 | 47 | 50 | 56 | 68 | 77 | 87 | 90 | 90 | 86 | 76 | 55 | 41 |
| Low °F | -20 | -17 | -12 | 1 | 16 | 28 | 34 | 35 | 24 | -2 | -17 | -20 |
| Precip. (in) | 9.5 | 6.5 | 7.5 | 4.8 | 3.6 | 3.0 | 1.3 | 1.7 | 3.4 | 7.2 | 10.7 | 9.1 |
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
- 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.
- 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.
- Check road and trail conditions with the managing agency before you go.
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 Sulphide Glacier, closest first.
Glacier
Glacier
Mountain PeakGlacier
Waterfall
Mountain PeakWaterfall
Glacier
GlacierCampgrounds nearby (Recreation.gov)
- Shannon Creek Campground8.1 km (5.0 mi) · reservable
- Park Creek Campground9.7 km (6.0 mi) · reservable
- Swift Creek Campground10.0 km (6.2 mi) · reservable
- Panorama Point Campground11.0 km (6.9 mi) · reservable
- Silver Fir Campground12.0 km (7.5 mi) · reservable
FAQ
When is the best time to photograph Sulphide Glacier?
What time is golden hour at Sulphide Glacier?
Where does the sun rise and set at Sulphide Glacier?
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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.