Eldorado Canyon State Park is a state park in Boulder County, Colorado. It sits roughly 7.8 km (4.8 mi) ENE of Coal Creek.
Eldorado Canyon State Park is part of the Colorado State Park system. It was established in 1978 and is located in Boulder County south of the city of Boulder. The park consists of two areas, the Inner Canyon (developed area) and Crescent Meadows (undeveloped area). The park encompasses 885 acres (3.6 km2) with a variety of recreation opportunities available. Eldorado Canyon is home to one of the world's most accessible and comprehensive rock climbing areas. This state park is open during daylight hours only, visitors are expected to leave before dusk. Timed vehicle entry reservations are required on weekends and federal holidays between May 1 and October 1.From the Wikipedia article “Eldorado Canyon State Park”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Eldorado Canyon State Park 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 302° (WNW) in June to 240° (WSW) in December, and the midday sun climbs to 74° in summer but only 27° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:05 AM | 90° E | 7:13 PM | 271° W | 50° | 12h 08m |
| June solstice (Jun 21) | 5:33 AM | 58° ENE | 8:34 PM | 302° WNW | 74° | 15h 00m |
| September equinox (Sep 22) | 6:49 AM | 89° E | 7:00 PM | 271° W | 50° | 12h 10m |
| December solstice (Dec 21) | 7:20 AM | 121° ESE | 4:40 PM | 240° WSW | 27° | 9h 20m |
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
State parks often protect a signature feature — a gorge, lake or overlook — that is best in early morning before visitors and harsh light arrive.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:52 AM | 7:22 AM | 8:03 AM | 4:19 PM | 5:01 PM | 5:30 PM | 9h 39m |
| February | 6:27 AM | 6:55 AM | 7:33 AM | 5:00 PM | 5:38 PM | 6:05 PM | 10h 43m |
| March | 6:47 AM | 7:14 AM | 7:49 AM | 6:33 PM | 7:08 PM | 7:35 PM | 11h 55m |
| April | 5:56 AM | 6:24 AM | 7:00 AM | 7:03 PM | 7:40 PM | 8:08 PM | 13h 16m |
| May | 5:16 AM | 5:47 AM | 6:26 AM | 7:31 PM | 8:10 PM | 8:40 PM | 14h 23m |
| June | 5:00 AM | 5:33 AM | 6:13 AM | 7:52 PM | 8:32 PM | 9:05 PM | 14h 59m |
| July | 5:14 AM | 5:46 AM | 6:25 AM | 7:50 PM | 8:30 PM | 9:01 PM | 14h 44m |
| August | 5:45 AM | 6:14 AM | 6:51 AM | 7:22 PM | 7:59 PM | 8:28 PM | 13h 46m |
| September | 6:16 AM | 6:43 AM | 7:19 AM | 6:36 PM | 7:12 PM | 7:39 PM | 12h 29m |
| October | 6:45 AM | 7:12 AM | 7:49 AM | 5:46 PM | 6:23 PM | 6:50 PM | 11h 11m |
| November | 6:18 AM | 6:47 AM | 7:27 AM | 4:06 PM | 4:46 PM | 5:15 PM | 9h 59m |
| December | 6:46 AM | 7:17 AM | 7:59 AM | 3:55 PM | 4:38 PM | 5:08 PM | 9h 21m |
Local time (America/Denver), 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 Eldorado Canyon State Park, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.8 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 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 | — | -3° | — |
| February | 5:08 AM – 5:18 AM | 0.2 | 11° | SE → SE |
| March | 4:18 AM – 5:38 AM | 1.3 | 18° | SE → SSE |
| April | 2:16 AM – 4:36 AM | 2.3 | 21° | SE → S |
| May | 12:20 AM – 3:50 AM | 3.5 | 21° | SE → S |
| June | 10:35 PM – 3:25 AM | 4.8 | 21° | SE → SSW |
| July | 10:27 PM – 1:57 AM | 3.5 | 21° | S → SW |
| August | 9:41 PM – 12:01 AM | 2.3 | 21° | S → SW |
| September | 8:43 PM – 9:53 PM | 1.2 | 18° | SSW → SW |
| October | 7:53 PM – 8:03 PM | 0.2 | 11° | 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: 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 ≈ 19.6 mag/arcsec². Aurora needs roughly Kp 7.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 44% average cloud cover) and April as the cloudiest (64%). July is the warmest month and January 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 | 46 | 47 | 64 | 68 | 81 | 86 | 87 | 85 | 82 | 73 | 62 | 49 |
| Low °F | -21 | -30 | -20 | -8 | 4 | 23 | 34 | 31 | 16 | -6 | -14 | -21 |
| Precip. (in) | 1.2 | 1.6 | 1.8 | 2.4 | 2.3 | 1.4 | 2.4 | 2.0 | 1.6 | 1.4 | 1.2 | 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 state park
- Day-use fees or passes are common; buy them online before arriving.
- Check park hours: many state parks close at dusk, which affects sunset and night shooting.
- Ask rangers about photography permits for commercial work, models or drones.
- Weekday mornings are the least crowded at popular viewpoints.
- Trail maps often mark overlooks — combine them with the sun azimuth to plan.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
Season: Spring wildflowers and autumn color are peak seasons in most parks.
Suggested gear: Versatile zoom lens, Tripod, Park pass. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drone rules in state parks vary by state and even by park — many require a permit or ban recreational drone flights. Check the park's rules and the FAA B4UFLY app before flying.
Nearby photo spots
Other locations within 40 km of Eldorado Canyon State Park, closest first.
Mountain Peak
Mountain Peak
Natural Arch
Mountain Peak
Mountain Peak
National Wildlife Refuge
Botanical Garden
Waterfall
State ParkCampgrounds nearby (Recreation.gov)
- Kelly Dahl17.5 km (10.9 mi) · reservable
- Cold Springs - Arapaho Roosevelt Nf (Co)19.9 km (12.4 mi) · reservable
- Pickle Gulch22 km (14 mi) · reservable
- Rainbow Lakes Campground25 km (16 mi)
- Columbine Campground26 km (16 mi) · reservable
FAQ
When is the best time to photograph Eldorado Canyon State Park?
What time is golden hour at Eldorado Canyon State Park?
Where does the sun rise and set at Eldorado Canyon State Park?
Can you see the Milky Way from Eldorado Canyon State Park?
Do you need a permit to photograph at Eldorado Canyon State Park?
How far is Eldorado Canyon State Park from Coal Creek?
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.