Located in Klickitat County, Washington, Goldendale Observatory State Park is a state park. It sits roughly 2.1 km (1.3 mi) NNE of Goldendale.
Goldendale Observatory State Park Heritage Site is an educational facility on the northern side of Goldendale, Washington, notable for its unusually large public telescope. The state park occupies five acres (2.0 ha) atop a 2,100-foot (640 m) hill. Access is via a winding paved road through an oak forest. The site includes a small picnic area, interpretive center, amphitheater, and the observatory. There are several telescopes on-site, including portable Dobsonians, a permanently mounted Hydrogen-Alpha solar telescope, and the primary instrument; a 24.5-inch reflector which is housed in the South Dome. The facility receives 30,000–40,000 visitors annually. In 2022, the Observatory reopened after a lengthy renovation process.From the Wikipedia article “Goldendale Observatory State Park”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Goldendale Observatory State Park the sunrise point swings a long way through the year: about 54° (NE) at the June solstice and 124° (SE) in late December. Sunset moves from 306° (NW) in June to 236° (WSW) in December, and the midday sun climbs to 68° in summer but only 21° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:07 AM | 89° E | 7:16 PM | 271° W | 44° | 12h 09m |
| June solstice (Jun 21) | 5:14 AM | 54° NE | 8:58 PM | 306° NW | 68° | 15h 44m |
| September equinox (Sep 22) | 6:51 AM | 89° E | 7:03 PM | 271° W | 44° | 12h 12m |
| December solstice (Dec 21) | 7:42 AM | 124° SE | 4:22 PM | 236° WSW | 21° | 8h 39m |
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 | 7:08 AM | 7:41 AM | 8:29 AM | 3:58 PM | 4:45 PM | 5:19 PM | 9h 04m |
| February | 6:36 AM | 7:07 AM | 7:49 AM | 4:48 PM | 5:30 PM | 6:01 PM | 10h 23m |
| March | 6:47 AM | 7:17 AM | 7:56 AM | 6:30 PM | 7:09 PM | 7:39 PM | 11h 53m |
| April | 5:47 AM | 6:18 AM | 6:58 AM | 7:10 PM | 7:50 PM | 8:21 PM | 13h 32m |
| May | 4:57 AM | 5:32 AM | 6:16 AM | 7:45 PM | 8:29 PM | 9:03 PM | 14h 56m |
| June | 4:35 AM | 5:13 AM | 5:59 AM | 8:10 PM | 8:56 PM | 9:34 PM | 15h 42m |
| July | 4:52 AM | 5:28 AM | 6:13 AM | 8:06 PM | 8:51 PM | 9:28 PM | 15h 23m |
| August | 5:31 AM | 6:04 AM | 6:45 AM | 7:32 PM | 8:13 PM | 8:46 PM | 14h 09m |
| September | 6:12 AM | 6:42 AM | 7:22 AM | 6:37 PM | 7:16 PM | 7:46 PM | 12h 34m |
| October | 6:50 AM | 7:20 AM | 8:01 AM | 5:38 PM | 6:19 PM | 6:49 PM | 10h 58m |
| November | 6:32 AM | 7:04 AM | 7:50 AM | 3:48 PM | 4:33 PM | 5:06 PM | 9h 29m |
| December | 7:04 AM | 7:39 AM | 8:29 AM | 3:30 PM | 4:20 PM | 4:54 PM | 8h 41m |
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 Goldendale Observatory State Park, the Milky Way core is visible in a dark sky from April through August. June gives the longest window (about 2.8 hours on a moonless night), and the core peaks around 15° 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 | — | -4° | — |
| February | Below 10° in darkness | — | 7° | — |
| March | 5:09 AM – 5:29 AM | 0.3 | 12° | SSE → SSE |
| April | 3:09 AM – 4:19 AM | 1.2 | 14° | SSE → SSE |
| May | 1:10 AM – 3:10 AM | 2.0 | 15° | SSE → S |
| June | 11:35 PM – 2:25 AM | 2.8 | 15° | SSE → SSW |
| July | 11:16 PM – 1:16 AM | 2.0 | 15° | S → SSW |
| August | 10:10 PM – 11:10 PM | 1.0 | 14° | SSW → SSW |
| September | 8:58 PM – 9:08 PM | 0.2 | 11° | SSW → SSW |
| October | Below 10° in darkness | — | 6° | — |
| November | Below 10° in darkness | — | -3° | — |
| 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: 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 ≈ 20.66 mag/arcsec². Aurora needs roughly Kp 5.5+ 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 25% average cloud cover) and January as the cloudiest (77%). 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 | 63 | 65 | 80 | 86 | 95 | 100 | 102 | 100 | 101 | 88 | 69 | 61 |
| Low °F | -4 | 8 | 12 | 25 | 30 | 37 | 44 | 44 | 34 | 19 | 10 | 0 |
| Precip. (in) | 2.8 | 2.0 | 2.2 | 1.6 | 1.4 | 1.0 | 0.2 | 0.4 | 0.6 | 1.7 | 2.6 | 3.5 |
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
- Weekday mornings are the least crowded at popular viewpoints.
- Trail maps often mark overlooks — combine them with the sun azimuth to plan.
- 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.
- Check road and trail conditions with the managing agency before you go.
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 Goldendale Observatory State Park, closest first.
State Park
State Park
State Park
Mountain Pass
Natural Arch
State Park
Waterfall
WaterfallWaterfallCampgrounds nearby (Recreation.gov)
FAQ
When is the best time to photograph Goldendale Observatory State Park?
What time is golden hour at Goldendale Observatory State Park?
Where does the sun rise and set at Goldendale Observatory State Park?
Can you see the Milky Way from Goldendale Observatory State Park?
Do you need a permit to photograph at Goldendale Observatory State Park?
How far is Goldendale Observatory State Park from Goldendale?
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.