Located in Riverside County, California, Otay Mountain Wilderness is a wilderness area. The nearest town is Anza, about 16.5 km (10.3 mi) away (Otay Mountain Wilderness lies WNW of town).
The Otay Mountain Wilderness is a U.S. wilderness area in San Diego County, California, 12 miles east of the community of Otay Mesa and just north of the Mexico–United States border. Some parts of the wilderness area rise quickly from sea level, reaching a peak of just over 3,500 feet (1,100 m) at the summit of Otay Mountain. Wilderness status was conferred on October 7, 1998, effectively preserving 18,500 acres under protection of the Wilderness Act, a component of the National Wilderness Preservation System. The legislation was signed by President Bill Clinton on December 11, 1999. The wilderness is managed by the Bureau of Land Management.From the Wikipedia article “Otay Mountain Wilderness”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Otay Mountain Wilderness the sunrise point swings a long way through the year: about 61° (ENE) at the June solstice and 118° (ESE) in late December. Sunset moves from 299° (WNW) in June to 242° (WSW) in December, and the midday sun climbs to 80° in summer but only 33° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 6:52 AM | 90° E | 6:59 PM | 271° W | 56° | 12h 08m |
| June solstice (Jun 21) | 5:38 AM | 61° ENE | 8:01 PM | 299° WNW | 80° | 14h 23m |
| September equinox (Sep 22) | 6:36 AM | 89° E | 6:46 PM | 271° W | 57° | 12h 09m |
| December solstice (Dec 21) | 6:49 AM | 118° ESE | 4:44 PM | 242° WSW | 33° | 9h 55m |
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
Wilderness areas reward those who camp: being on location at sunrise and in the dark is the main advantage over day visitors.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:25 AM | 6:52 AM | 7:29 AM | 4:25 PM | 5:02 PM | 5:29 PM | 10h 10m |
| February | 6:07 AM | 6:32 AM | 7:07 AM | 4:58 PM | 5:32 PM | 5:58 PM | 11h 00m |
| March | 6:34 AM | 6:59 AM | 7:32 AM | 6:23 PM | 6:56 PM | 7:20 PM | 11h 57m |
| April | 5:52 AM | 6:17 AM | 6:51 AM | 6:45 PM | 7:18 PM | 7:44 PM | 13h 01m |
| May | 5:20 AM | 5:48 AM | 6:23 AM | 7:06 PM | 7:42 PM | 8:09 PM | 13h 54m |
| June | 5:09 AM | 5:38 AM | 6:14 AM | 7:23 PM | 8:00 PM | 8:29 PM | 14h 22m |
| July | 5:20 AM | 5:49 AM | 6:25 AM | 7:23 PM | 7:59 PM | 8:27 PM | 14h 10m |
| August | 5:44 AM | 6:10 AM | 6:44 AM | 7:01 PM | 7:35 PM | 8:01 PM | 13h 25m |
| September | 6:07 AM | 6:32 AM | 7:04 AM | 6:23 PM | 6:55 PM | 7:20 PM | 12h 24m |
| October | 6:28 AM | 6:53 AM | 7:26 AM | 5:41 PM | 6:15 PM | 6:40 PM | 11h 22m |
| November | 5:54 AM | 6:20 AM | 6:56 AM | 4:10 PM | 4:46 PM | 5:12 PM | 10h 26m |
| December | 6:18 AM | 6:45 AM | 7:23 AM | 4:03 PM | 4:42 PM | 5:09 PM | 9h 56m |
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 Otay Mountain Wilderness, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 6.2 hours on a moonless night), and the core peaks around 28° above the southern horizon. Our light-pollution model puts the sky at about Bortle 5 (suburban sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 1° | — |
| February | 4:26 AM – 5:06 AM | 0.7 | 17° | SE → SE |
| March | 3:28 AM – 5:28 AM | 2.0 | 24° | SE → SSE |
| April | 1:25 AM – 4:45 AM | 3.3 | 28° | SE → S |
| May | 11:27 PM – 4:07 AM | 4.7 | 28° | SE → SSW |
| June | 9:42 PM – 3:52 AM | 6.2 | 28° | SE → SW |
| July | 9:38 PM – 2:28 AM | 4.8 | 28° | SSE → SW |
| August | 9:05 PM – 12:25 AM | 3.3 | 28° | S → SW |
| September | 8:19 PM – 10:19 PM | 2.0 | 24° | SSW → SW |
| October | 7:37 PM – 8:17 PM | 0.7 | 17° | SW → SW |
| November | Below 10° in darkness | — | 3° | — |
| December | Below 10° in darkness | — | -18° | — |
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: 5 Bortle 5 — Suburban sky. The Milky Way is weak near the horizon and washed out overhead; long exposures pick up a sky glow. Modeled zenith brightness ≈ 20.25 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show June as the clearest month (about 15% average cloud cover) and February as the cloudiest (41%). 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 | 84 | 90 | 94 | 100 | 109 | 117 | 118 | 115 | 115 | 104 | 92 | 82 |
| Low °F | 26 | 28 | 33 | 37 | 42 | 48 | 59 | 56 | 48 | 40 | 30 | 28 |
| Precip. (in) | 1.3 | 1.7 | 0.7 | 0.5 | 0.1 | 0.0 | 0.2 | 0.2 | 0.2 | 0.5 | 0.6 | 1.3 |
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 wilderness area
- Night skies are often among the darkest in the country.
- Motorized and mechanized equipment, including drones, is prohibited in designated wilderness.
- Group size limits and permits may apply; check with the managing agency.
- Practice Leave No Trace — camp on durable surfaces away from lakes and streams.
- Pack weight matters: a single zoom and a light tripod cover most situations.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
Season: Most high wilderness is snow-free from July to September; lower deserts are best in spring and autumn.
Suggested gear: Lightweight tripod, Spare batteries, Headlamp, Navigation. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drones may not take off from or land in federally designated wilderness, where mechanized equipment is prohibited under the Wilderness Act.
Nearby photo spots
Other locations within 40 km of Otay Mountain Wilderness, closest first.
Wilderness Area
National Forest
Mountain Peak
Hot Spring
Waterfall
State Park
Mountain Peak
Canyon
Scenic ViewpointCampgrounds nearby (Recreation.gov)
- Dripping Springs Campground (Ca)18.6 km (11.6 mi) · reservable
- Oak Grove Campground24 km (15 mi) · reservable
- Fern Basin24 km (15 mi) · reservable
- Marion Mountain24 km (15 mi) · reservable
- Dark Canyon Campground 26 km (16 mi) · reservable
FAQ
When is the best time to photograph Otay Mountain Wilderness?
What time is golden hour at Otay Mountain Wilderness?
Where does the sun rise and set at Otay Mountain Wilderness?
Can you see the Milky Way from Otay Mountain Wilderness?
Do you need a permit to photograph at Otay Mountain Wilderness?
How far is Otay Mountain Wilderness from Anza?
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.