Yukon Delta National Wildlife Refuge is a national wildlife refuge in Bethel Census Area, Alaska. The nearest town is Bethel, about 71 km (44 mi) away (Yukon Delta National Wildlife Refuge lies WNW of town).
The Yukon Delta National Wildlife Refuge is a United States National Wildlife Refuge covering about 19.16 million acres (77,500 km2) in southwestern Alaska. It is the second-largest National Wildlife Refuge in the country, only slightly smaller than the Arctic National Wildlife Refuge. It is a coastal plain extending to the Bering Sea, covering the delta created by the Yukon and Kuskokwim rivers. The delta includes extensive wetlands near sea level that are often inundated by Bering Sea tides. It is bordered on the east by Wood-Tikchik State Park, the largest state park in the United States. The refuge is administered from offices in Bethel.From the Wikipedia article “Yukon Delta National Wildlife Refuge”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Yukon Delta National Wildlife Refuge the sunrise point swings a long way through the year: about 32° (NNE) at the June solstice and 143° (SE) in late December. Sunset moves from 328° (NNW) in June to 218° (SW) in December, and the midday sun climbs to 52° in summer but only 6° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 8:54 AM | 89° E | 9:07 PM | 272° W | 29° | 12h 13m |
| June solstice (Jun 21) | 5:16 AM | 32° NNE | 12:33 AM | 328° NNW | 52° | 19h 17m |
| September equinox (Sep 22) | 8:37 AM | 88° E | 8:54 PM | 272° W | 29° | 12h 17m |
| December solstice (Dec 21) | 11:05 AM | 143° SE | 4:37 PM | 218° SW | 6° | 5h 32m |
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
Wildlife is most active in the first and last two hours of daylight — exactly when the light is warmest.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 9:53 AM | 10:48 AM | 12:33 PM | 3:31 PM | 5:16 PM | 6:12 PM | 6h 28m |
| February | 8:49 AM | 9:34 AM | 10:41 AM | 5:33 PM | 6:40 PM | 7:25 PM | 9h 05m |
| March | 8:27 AM | 9:09 AM | 10:07 AM | 7:57 PM | 8:54 PM | 9:37 PM | 11h 45m |
| April | 6:44 AM | 7:32 AM | 8:31 AM | 9:14 PM | 10:13 PM | 11:01 PM | 14h 41m |
| May | 4:58 AM | 6:07 AM | 7:17 AM | 10:21 PM | 11:32 PM | 12:41 AM | 17h 25m |
| June | — | 5:17 AM | 6:42 AM | 11:05 PM | 12:30 AM | — | 19h 13m |
| July | 4:17 AM | 5:47 AM | 7:04 AM | 10:53 PM | 12:10 AM | 1:40 AM | 18h 23m |
| August | 6:09 AM | 7:03 AM | 8:05 AM | 9:50 PM | 10:52 PM | 11:46 PM | 15h 49m |
| September | 7:36 AM | 8:20 AM | 9:17 AM | 8:20 PM | 9:16 PM | 10:00 PM | 12h 56m |
| October | 8:51 AM | 9:35 AM | 10:36 AM | 6:41 PM | 7:42 PM | 8:26 PM | 10h 07m |
| November | 9:06 AM | 9:58 AM | 11:23 AM | 3:52 PM | 5:17 PM | 6:09 PM | 7h 20m |
| December | 9:59 AM | 11:00 AM | — | — | 4:36 PM | 5:37 PM | 5h 36m |
Local time (America/Nome), 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
The Milky Way's bright core (in Sagittarius) barely clears the southern horizon at this latitude, so focus on winter Milky Way, aurora or star trails instead.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -12° | — |
| February | Below 10° in darkness | — | -6° | — |
| March | Below 10° in darkness | — | -5° | — |
| April | Below 10° in darkness | — | -9° | — |
| May | No darkness | — | — | — |
| June | No darkness | — | — | — |
| July | No darkness | — | — | — |
| August | Below 10° in darkness | — | -4° | — |
| September | Below 10° in darkness | — | -7° | — |
| October | Below 10° in darkness | — | -7° | — |
| November | Below 10° in darkness | — | -12° | — |
| December | Below 10° in darkness | — | -22° | — |
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: 1 Bortle 1 — Excellent dark-sky site. The Milky Way casts faint shadows; zodiacal light and airglow are obvious. Modeled zenith brightness ≈ 21.95 mag/arcsec². Aurora needs roughly Kp 1.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show March as the clearest month (about 54% average cloud cover) and July as the cloudiest (82%). 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 | 36 | 35 | 35 | 58 | 72 | 77 | 87 | 81 | 70 | 54 | 45 | 40 |
| Low °F | -44 | -40 | -27 | -15 | 6 | 27 | 33 | 32 | 26 | -5 | -33 | -40 |
| Precip. (in) | 1.7 | 2.3 | 1.3 | 1.8 | 2.2 | 2.4 | 3.5 | 3.7 | 3.6 | 2.9 | 2.4 | 2.0 |
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 national wildlife refuge
- A 400–600 mm lens (or a crop body) is the usual tool for birds.
- Fast shutter speeds (1/2000 s+) freeze wingbeats; raise ISO rather than lose the shot.
- Migration peaks bring the largest concentrations — see the birding calendar for this state.
- Use auto-loop roads as mobile blinds; animals often tolerate vehicles more than people on foot.
- Stay on designated routes and keep a respectful distance — if an animal changes behavior, you are too close.
- Check road and trail conditions with the managing agency before you go.
Season: Spring and autumn migration are the highlights; winter brings waterfowl to many southern refuges.
Suggested gear: Telephoto lens (400 mm+), Bean bag for car window, Binoculars. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Launching or landing drones on National Wildlife Refuge lands generally requires a special use permit from the refuge manager, and wildlife disturbance rules apply everywhere.
FAQ
When is the best time to photograph Yukon Delta National Wildlife Refuge?
What time is golden hour at Yukon Delta National Wildlife Refuge?
Where does the sun rise and set at Yukon Delta National Wildlife Refuge?
Can you see the Milky Way from Yukon Delta National Wildlife Refuge?
Do you need a permit to photograph at Yukon Delta National Wildlife Refuge?
How far is Yukon Delta National Wildlife Refuge from Bethel?
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.
![Brant Nesting Area - Yukon Delta National Wildlife Refuge[1]](https://upload.wikimedia.org/wikipedia/commons/0/07/Brant_Nesting_Area_-_Yukon_Delta_National_Wildlife_Refuge.jpg)