Located in Shasta County, California, Bumpass Mountain is a mountain peak at about 2,664 m (8,740 ft) above sea level. It lies in or next to Lassen Volcanic National Park, so park hours, fees and rules apply. It sits roughly 28 km (18 mi) NW of Chester.
Bumpass Mountain is a mountain located south of Lassen Peak in Lassen Volcanic National Park, California. It rises to an elevation of 8,753 feet (2,668 m) near Bumpass Hell and Lake Helen. The mountain receives heavy snowfall during the winter, which can lead to deep snowpacks of over 300 inches (7.6 m) near the mountain. Both the mountain and Bumpass Hell were named in honor of Kendall V. Bumpass, a hunter, guide and prospector in the area around Red Bluff, California, before 1870.From the Wikipedia article “Bumpass Mountain”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Bumpass Mountain the sunrise point swings a long way through the year: about 58° (ENE) at the June solstice and 121° (ESE) in late December. Sunset moves from 303° (WNW) in June to 239° (WSW) in December, and the midday sun climbs to 73° in summer but only 26° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:10 AM | 90° E | 7:18 PM | 271° W | 49° | 12h 08m |
| June solstice (Jun 21) | 5:37 AM | 58° ENE | 8:41 PM | 303° WNW | 73° | 15h 04m |
| September equinox (Sep 22) | 6:54 AM | 89° E | 7:05 PM | 271° W | 50° | 12h 10m |
| December solstice (Dec 21) | 7:27 AM | 121° ESE | 4:43 PM | 239° WSW | 26° | 9h 17m |
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
Summits catch first and last light — alpenglow can turn rock pink or orange minutes before sunrise and after sunset while valleys stay in shadow.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:58 AM | 7:28 AM | 8:10 AM | 4:22 PM | 5:04 PM | 5:34 PM | 9h 36m |
| February | 6:33 AM | 7:01 AM | 7:39 AM | 5:04 PM | 5:42 PM | 6:10 PM | 10h 41m |
| March | 6:51 AM | 7:18 AM | 7:54 AM | 6:37 PM | 7:13 PM | 7:40 PM | 11h 55m |
| April | 6:00 AM | 6:28 AM | 7:05 AM | 7:09 PM | 7:45 PM | 8:13 PM | 13h 17m |
| May | 5:19 AM | 5:50 AM | 6:29 AM | 7:37 PM | 8:16 PM | 8:47 PM | 14h 26m |
| June | 5:03 AM | 5:36 AM | 6:17 AM | 7:58 PM | 8:39 PM | 9:12 PM | 15h 03m |
| July | 5:17 AM | 5:49 AM | 6:29 AM | 7:56 PM | 8:36 PM | 9:08 PM | 14h 47m |
| August | 5:48 AM | 6:18 AM | 6:55 AM | 7:28 PM | 8:05 PM | 8:34 PM | 13h 47m |
| September | 6:20 AM | 6:48 AM | 7:24 AM | 6:41 PM | 7:17 PM | 7:44 PM | 12h 29m |
| October | 6:50 AM | 7:18 AM | 7:54 AM | 5:50 PM | 6:27 PM | 6:55 PM | 11h 10m |
| November | 6:24 AM | 6:53 AM | 7:34 AM | 4:09 PM | 4:50 PM | 5:19 PM | 9h 57m |
| December | 6:52 AM | 7:23 AM | 8:06 AM | 3:58 PM | 4:41 PM | 5:12 PM | 9h 18m |
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 Bumpass Mountain, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.7 hours on a moonless night), and the core peaks around 21° 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 | — | -2° | — |
| February | 5:23 AM – 5:23 AM | 0.0 | 11° | SE → SE |
| March | 4:34 AM – 5:44 AM | 1.2 | 17° | SE → SSE |
| April | 2:33 AM – 4:43 AM | 2.2 | 20° | SE → S |
| May | 12:28 AM – 3:48 AM | 3.3 | 21° | SE → S |
| June | 10:44 PM – 3:24 AM | 4.7 | 21° | SSE → SSW |
| July | 10:35 PM – 2:05 AM | 3.5 | 21° | S → SW |
| August | 9:48 PM – 11:58 PM | 2.2 | 20° | S → SW |
| September | 8:49 PM – 9:59 PM | 1.2 | 17° | SSW → SW |
| October | 7:58 PM – 7:58 PM | 0.0 | 11° | 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: 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 ≈ 21.82 mag/arcsec². Aurora needs roughly Kp 8.0+ 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 14% average cloud cover) and December as the cloudiest (62%). 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 | 59 | 64 | 65 | 74 | 88 | 94 | 102 | 99 | 96 | 87 | 74 | 58 |
| Low °F | -1 | 2 | 5 | 10 | 23 | 27 | 38 | 35 | 26 | 21 | -2 | -3 |
| Precip. (in) | 5.0 | 5.9 | 5.3 | 3.1 | 2.0 | 0.7 | 0.1 | 0.1 | 0.5 | 2.0 | 3.8 | 7.1 |
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 mountain peak
- Clouds around the summit add drama — a clear blue sky is often the least interesting condition.
- Photograph the peak from a lake, meadow or ridge at sunrise when the face that looks east lights up first.
- Long lenses compress ridgelines; shoot the peak from several miles away to make it look massive.
- Afternoon thunderstorms are common in summer at high elevations — plan summit hikes for early morning.
- Snow on the summit holds detail best when you expose for the highlights and lift shadows later.
- Check road and trail conditions with the managing agency before you go.
Season: Early summer keeps snow on the peaks with green valleys below; autumn adds aspen or larch color in many ranges.
Suggested gear: Telephoto lens, Lightweight tripod, Warm layers, Microspikes in shoulder seasons. 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 Bumpass Mountain, closest first.
Hot Spring
Hot Spring
Scenic Viewpoint
Lake
Waterfall
Mountain Peak
Hot Spring
VolcanoWaterfallCampgrounds nearby (Recreation.gov)
- Southwest Campground - Winter/Spring4.0 km (2.5 mi)
- Summit Lake South7.1 km (4.4 mi) · reservable
- Summit Lake North7.3 km (4.5 mi) · reservable
- Summit Lake Stock Corral7.8 km (4.9 mi) · reservable
- Warner Valley Campground9.0 km (5.6 mi) · reservable
FAQ
When is the best time to photograph Bumpass Mountain?
What time is golden hour at Bumpass Mountain?
Where does the sun rise and set at Bumpass Mountain?
Can you see the Milky Way from Bumpass Mountain?
Do you need a permit to photograph at Bumpass Mountain?
How far is Bumpass Mountain from Chester?
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.