California Caverns is a cave in Calaveras County, California. It sits roughly 4.0 km (2.5 mi) SE of Mountain Ranch.
California Cavern is a limestone cave in the Sierra Nevada foothills, in Cave City, Calaveras County, California. The series of interconnected caverns are one of the earliest officially recorded caves in the Mother Lode region of California. Although one of numerous caves in the Mother Lode region, California Caverns claims the distinction of having the most extensive system of caverns and passageways.From the Wikipedia article “California Caverns”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At California Caverns 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 240° (WSW) in December, and the midday sun climbs to 75° in summer but only 28° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:06 AM | 90° E | 7:14 PM | 271° W | 52° | 12h 08m |
| June solstice (Jun 21) | 5:40 AM | 59° ENE | 8:29 PM | 301° WNW | 75° | 14h 49m |
| September equinox (Sep 22) | 6:51 AM | 89° E | 7:01 PM | 271° W | 52° | 12h 10m |
| December solstice (Dec 21) | 7:16 AM | 120° ESE | 4:46 PM | 240° WSW | 28° | 9h 30m |
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
Caves are lit artificially — show caves have fixed lighting, so a fast lens and high ISO beat flash, which flattens formations.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:49 AM | 7:18 AM | 7:58 AM | 4:26 PM | 5:06 PM | 5:35 PM | 9h 48m |
| February | 6:26 AM | 6:53 AM | 7:30 AM | 5:04 PM | 5:41 PM | 6:08 PM | 10h 48m |
| March | 6:48 AM | 7:14 AM | 7:49 AM | 6:35 PM | 7:10 PM | 7:36 PM | 11h 55m |
| April | 6:00 AM | 6:27 AM | 7:02 AM | 7:03 PM | 7:38 PM | 8:06 PM | 13h 11m |
| May | 5:22 AM | 5:52 AM | 6:30 AM | 7:29 PM | 8:07 PM | 8:36 PM | 14h 14m |
| June | 5:08 AM | 5:39 AM | 6:19 AM | 7:48 PM | 8:28 PM | 8:59 PM | 14h 48m |
| July | 5:21 AM | 5:52 AM | 6:30 AM | 7:47 PM | 8:26 PM | 8:56 PM | 14h 34m |
| August | 5:50 AM | 6:18 AM | 6:54 AM | 7:21 PM | 7:57 PM | 8:25 PM | 13h 39m |
| September | 6:18 AM | 6:45 AM | 7:19 AM | 6:37 PM | 7:12 PM | 7:38 PM | 12h 27m |
| October | 6:45 AM | 7:11 AM | 7:47 AM | 5:50 PM | 6:25 PM | 6:52 PM | 11h 14m |
| November | 6:16 AM | 6:44 AM | 7:23 AM | 4:12 PM | 4:51 PM | 5:19 PM | 10h 07m |
| December | 6:43 AM | 7:12 AM | 7:54 AM | 4:02 PM | 4:44 PM | 5:13 PM | 9h 31m |
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 California Caverns, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.2 hours on a moonless night), and the core peaks around 23° 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 | 5:00 AM – 5:20 AM | 0.3 | 13° | SE → SE |
| March | 4:07 AM – 5:37 AM | 1.5 | 19° | SE → SSE |
| April | 2:12 AM – 4:42 AM | 2.5 | 22° | SE → S |
| May | 12:12 AM – 4:02 AM | 3.8 | 23° | SE → SSW |
| June | 10:24 PM – 3:34 AM | 5.2 | 23° | SE → SSW |
| July | 10:17 PM – 2:17 AM | 4.0 | 23° | SSE → SW |
| August | 9:35 PM – 12:15 AM | 2.7 | 23° | S → SW |
| September | 8:41 PM – 10:11 PM | 1.5 | 19° | SSW → SW |
| October | 7:53 PM – 8:13 PM | 0.3 | 13° | SW → SW |
| November | Below 10° in darkness | — | 0° | — |
| 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 ≈ 21.18 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show August 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 | 72 | 70 | 75 | 84 | 97 | 104 | 107 | 103 | 107 | 97 | 83 | 70 |
| Low °F | 17 | 9 | 17 | 26 | 32 | 38 | 46 | 46 | 38 | 32 | 12 | 13 |
| Precip. (in) | 4.7 | 5.4 | 4.9 | 3.0 | 1.6 | 0.4 | 0.1 | 0.1 | 0.2 | 1.7 | 3.4 | 6.0 |
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 cave
- Use manual focus with focus peaking in low light.
- Never touch formations — skin oils stop their growth.
- Follow White-nose Syndrome decontamination rules where posted to protect bats.
- Many show caves restrict tripods on tours; ask in advance or bring a small beanbag.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
Season: Cave interiors stay at a constant temperature year-round; summer tours fill up, so book ahead.
Suggested gear: Fast lens (f/1.8–f/2.8), High-ISO camera, Small beanbag. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of California Caverns, closest first.
Cave
Cave
Natural Arch
Scenic Viewpoint
State Park
State Park
National ForestCampgrounds nearby (Recreation.gov)
- Glory Hole Recreation Area22 km (14 mi) · reservable
- Tuttletown Recreation Area24 km (15 mi) · reservable
- Acorn Campground26 km (16 mi) · reservable
- Oak Knoll Campground26 km (16 mi) · reservable
- Observation Point Picnic Shelter (Ca)27 km (17 mi) · reservable
FAQ
When is the best time to photograph California Caverns?
What time is golden hour at California Caverns?
Where does the sun rise and set at California Caverns?
Can you see the Milky Way from California Caverns?
Do you need a permit to photograph at California Caverns?
How far is California Caverns from Mountain Ranch?
Sources
Location data: Wikidata, 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.