Arboretum at Arizona State University is a botanical garden in Maricopa County, Arizona. It sits roughly 1.8 km (1.1 mi) NE of Tempe Junction.
The Arboretum at Arizona State University is an arboretum located in small exhibit sites scattered across walkways and open areas throughout the campus of the Arizona State University in Tempe, Arizona. All of the sites are open to the public daily without charge, since the campus' public areas are not shut off from city streets. The arboretum was formally dedicated in 1990, and now includes over 300 species from the Sonoran Desert and other regions. It contains one of the best collections of date palms and conifers in the desert Southwest, as well as a growing collection of native southwestern plants. Major collections currently include: Conifers Deciduous trees Evergreens Fruit trees PalmsFrom the Wikipedia article “Arboretum at Arizona State University”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Arboretum at Arizona State University 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) | 6:32 AM | 90° E | 6:40 PM | 271° W | 56° | 12h 07m |
| June solstice (Jun 21) | 5:19 AM | 61° ENE | 7:41 PM | 299° WNW | 80° | 14h 22m |
| September equinox (Sep 22) | 6:17 AM | 89° E | 6:26 PM | 271° W | 57° | 12h 09m |
| December solstice (Dec 21) | 7:29 AM | 118° ESE | 5:25 PM | 242° WSW | 33° | 9h 56m |
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 | 7:05 AM | 7:32 AM | 8:09 AM | 5:06 PM | 5:43 PM | 6:10 PM | 10h 11m |
| February | 6:47 AM | 7:13 AM | 7:47 AM | 5:39 PM | 6:13 PM | 6:38 PM | 11h 00m |
| March | 6:14 AM | 6:39 AM | 7:12 AM | 6:03 PM | 6:36 PM | 7:01 PM | 11h 57m |
| April | 5:32 AM | 5:58 AM | 6:31 AM | 6:25 PM | 6:59 PM | 7:24 PM | 13h 01m |
| May | 5:01 AM | 5:28 AM | 6:03 AM | 6:46 PM | 7:22 PM | 7:49 PM | 13h 53m |
| June | 4:49 AM | 5:18 AM | 5:55 AM | 7:03 PM | 7:40 PM | 8:09 PM | 14h 21m |
| July | 5:01 AM | 5:30 AM | 6:05 AM | 7:03 PM | 7:39 PM | 8:07 PM | 14h 09m |
| August | 5:25 AM | 5:51 AM | 6:25 AM | 6:41 PM | 7:15 PM | 7:41 PM | 13h 24m |
| September | 5:47 AM | 6:12 AM | 6:45 AM | 6:03 PM | 6:36 PM | 7:01 PM | 12h 24m |
| October | 6:08 AM | 6:33 AM | 7:06 AM | 5:22 PM | 5:55 PM | 6:20 PM | 11h 22m |
| November | 6:34 AM | 7:00 AM | 7:36 AM | 4:51 PM | 5:26 PM | 5:53 PM | 10h 26m |
| December | 6:58 AM | 7:25 AM | 8:03 AM | 4:44 PM | 5:22 PM | 5:50 PM | 9h 57m |
Local time (America/Phoenix), 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 Arboretum at Arizona State University, 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 9 (inner-city 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 | 5:07 AM – 5:47 AM | 0.7 | 17° | SE → SE |
| March | 3:09 AM – 5:09 AM | 2.0 | 24° | SE → SSE |
| April | 1:06 AM – 4:26 AM | 3.3 | 28° | SE → S |
| May | 11:08 PM – 3:48 AM | 4.7 | 28° | SE → SSW |
| June | 9:23 PM – 3:33 AM | 6.2 | 28° | SE → SW |
| July | 9:19 PM – 2:09 AM | 4.8 | 28° | SSE → SW |
| August | 8:46 PM – 12:06 AM | 3.3 | 28° | S → SW |
| September | 8:00 PM – 10:00 PM | 2.0 | 24° | SSW → SW |
| October | 7:18 PM – 7:58 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: 9 Bortle 9 — Inner-city sky. Only the Moon, planets and a few bright stars are visible. Modeled zenith brightness ≈ 17.96 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show June as the clearest month (about 18% average cloud cover) and July as the cloudiest (49%). 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 | 81 | 82 | 93 | 98 | 107 | 114 | 112 | 110 | 109 | 101 | 91 | 79 |
| Low °F | 16 | 19 | 25 | 31 | 39 | 53 | 65 | 64 | 50 | 33 | 23 | 18 |
| Precip. (in) | 1.6 | 1.6 | 1.0 | 0.5 | 0.2 | 0.1 | 1.8 | 1.7 | 1.1 | 0.7 | 0.8 | 1.6 |
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
- 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.
- Backlit petals glow; position yourself so the sun is behind the flower.
- Seasonal exhibits (orchids, tulips, cherry blossoms) draw crowds — arrive at opening.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
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 Arboretum at Arizona State University, closest first.
Mountain Peak
Lake
Scenic Viewpoint
Natural Arch
Botanical Garden
Mountain PeakNatural ArchScenic ViewpointScenic ViewpointFAQ
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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.