Washington Park Arboretum is a botanical garden in King County, Washington. It sits roughly 4.4 km (2.7 mi) NE of Seattle.
Washington Park is a public park in Seattle, Washington, United States, most of which is taken up by the Washington Park Arboretum, a joint project of the University of Washington, the Seattle Parks and Recreation, and the nonprofit Arboretum Foundation. Washington Park also includes a playfield and the Seattle Japanese Garden in its southwest corner. To the north is Union Bay; to the west are Montlake and Madison Valley; to the south is the Washington Park neighborhood; and to the east is the Broadmoor Golf Club.From the Wikipedia article “Washington Park Arboretum”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Washington Park Arboretum the sunrise point swings a long way through the year: about 53° (NE) at the June solstice and 125° (SE) in late December. Sunset moves from 308° (NW) in June to 235° (SW) in December, and the midday sun climbs to 66° in summer but only 19° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:13 AM | 89° E | 7:22 PM | 271° W | 42° | 12h 09m |
| June solstice (Jun 21) | 5:12 AM | 53° NE | 9:11 PM | 308° NW | 66° | 15h 59m |
| September equinox (Sep 22) | 6:57 AM | 89° E | 7:09 PM | 271° W | 43° | 12h 12m |
| December solstice (Dec 21) | 7:56 AM | 125° SE | 4:21 PM | 235° SW | 19° | 8h 25m |
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
Gardens are best on bright overcast days or early mornings when dew is fresh and the wind is calm.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:19 AM | 7:53 AM | 8:44 AM | 3:55 PM | 4:45 PM | 5:20 PM | 8h 51m |
| February | 6:44 AM | 7:16 AM | 8:00 AM | 4:49 PM | 5:33 PM | 6:04 PM | 10h 17m |
| March | 6:52 AM | 7:23 AM | 8:04 AM | 6:34 PM | 7:15 PM | 7:46 PM | 11h 52m |
| April | 5:48 AM | 6:21 AM | 7:02 AM | 7:17 PM | 7:59 PM | 8:31 PM | 13h 38m |
| May | 4:56 AM | 5:32 AM | 6:18 AM | 7:55 PM | 8:40 PM | 9:17 PM | 15h 08m |
| June | 4:31 AM | 5:12 AM | 6:00 AM | 8:21 PM | 9:10 PM | 9:50 PM | 15h 58m |
| July | 4:49 AM | 5:27 AM | 6:14 AM | 8:17 PM | 9:04 PM | 9:43 PM | 15h 37m |
| August | 5:32 AM | 6:06 AM | 6:49 AM | 7:41 PM | 8:23 PM | 8:57 PM | 14h 18m |
| September | 6:16 AM | 6:47 AM | 7:28 AM | 6:43 PM | 7:23 PM | 7:54 PM | 12h 36m |
| October | 6:58 AM | 7:29 AM | 8:11 AM | 5:40 PM | 6:23 PM | 6:54 PM | 10h 54m |
| November | 6:42 AM | 7:15 AM | 8:03 AM | 3:46 PM | 4:34 PM | 5:08 PM | 9h 19m |
| December | 7:16 AM | 7:52 AM | 8:45 AM | 3:26 PM | 4:19 PM | 4:55 PM | 8h 27m |
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 Washington Park Arboretum, the Milky Way core is visible in a dark sky from April through August. June gives the longest window (about 1.7 hours on a moonless night), and the core peaks around 13° above the southern horizon. Our light-pollution model puts the sky at about Bortle 7 (suburban / urban transition), 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 | — | -6° | — |
| February | Below 10° in darkness | — | 5° | — |
| March | Below 10° in darkness | — | 9° | — |
| April | 3:44 AM – 4:14 AM | 0.5 | 12° | SSE → SSE |
| May | 1:45 AM – 3:05 AM | 1.3 | 13° | SSE → S |
| June | 12:19 AM – 1:59 AM | 1.7 | 13° | SSE → S |
| July | 11:48 PM – 12:58 AM | 1.2 | 13° | S → SSW |
| August | 10:28 PM – 10:58 PM | 0.5 | 12° | SSW → SSW |
| September | Below 10° in darkness | — | 9° | — |
| October | Below 10° in darkness | — | 5° | — |
| November | Below 10° in darkness | — | -4° | — |
| 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: 7 Bortle 7 — Suburban / urban transition. The whole sky has a grey-white glow; the Milky Way is invisible to the eye. Modeled zenith brightness ≈ 18.42 mag/arcsec². Aurora needs roughly Kp 4.5+ 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 46% average cloud cover) and January as the cloudiest (80%). August 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 | 64 | 63 | 71 | 87 | 90 | 93 | 100 | 91 | 91 | 79 | 71 | 60 |
| Low °F | 13 | 15 | 25 | 29 | 31 | 40 | 46 | 46 | 39 | 28 | 16 | 13 |
| Precip. (in) | 6.7 | 4.5 | 5.4 | 3.8 | 2.8 | 2.0 | 0.7 | 1.1 | 2.3 | 4.8 | 7.5 | 6.8 |
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 botanical garden
- Backlit petals glow; position yourself so the sun is behind the flower.
- Seasonal exhibits (orchids, tulips, cherry blossoms) draw crowds — arrive at opening.
- Kaleidoscopic and abstract images are great for flower close-ups — try the online kaleidoscope tool.
- A macro lens or close-up filter opens a world of detail — try a shallow aperture against a soft background.
- Many gardens restrict tripods or charge for photography; check the rules before you go.
- Check road and trail conditions with the managing agency before you go.
Season: Spring bulbs and blossoms, summer perennials and autumn color; glasshouses offer winter subjects.
Suggested gear: Macro lens, Diffuser, Small reflector. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Washington Park Arboretum, closest first.
Botanical Garden
Botanical Garden
Lake
Lake
Lake
Lighthouse
Scenic Viewpoint
Botanical Garden
Botanical GardenFAQ
When is the best time to photograph Washington Park Arboretum?
What time is golden hour at Washington Park Arboretum?
Where does the sun rise and set at Washington Park Arboretum?
Can you see the Milky Way from Washington Park Arboretum?
Do you need a permit to photograph at Washington Park Arboretum?
How far is Washington Park Arboretum from Seattle?
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.