Potomac Water Gap — a mountain pass in Jefferson County, West Virginia — is a popular subject for landscape photographers. It lies in or next to Harpers Ferry National Historical Park, so park hours, fees and rules apply. It sits roughly 2.8 km (1.7 mi) E of Bolivar.
The Potomac Water Gap is a double water gap in the Blue Ridge Mountains, located at the intersection of the states of Virginia, West Virginia and Maryland, near Harpers Ferry. At 256 feet (78 m), it is the lowest crossing of the Blue Ridge Mountains.From the Wikipedia article “Potomac Water Gap”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Potomac Water Gap the sunrise point swings a long way through the year: about 58° (ENE) at the June solstice and 120° (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) | 7:15 AM | 90° E | 7:23 PM | 271° W | 51° | 12h 08m |
| June solstice (Jun 21) | 5:45 AM | 58° ENE | 8:42 PM | 302° WNW | 74° | 14h 56m |
| September equinox (Sep 22) | 6:59 AM | 89° E | 7:10 PM | 271° W | 51° | 12h 11m |
| December solstice (Dec 21) | 7:28 AM | 120° ESE | 4:52 PM | 240° WSW | 27° | 9h 24m |
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
Mountain passes sit above valleys, so they reward sunrise and sunset with layered ridges, valley fog and long shadows.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:00 AM | 7:30 AM | 8:11 AM | 4:31 PM | 5:12 PM | 5:41 PM | 9h 42m |
| February | 6:36 AM | 7:04 AM | 7:41 AM | 5:11 PM | 5:48 PM | 6:16 PM | 10h 44m |
| March | 6:57 AM | 7:23 AM | 7:59 AM | 6:43 PM | 7:18 PM | 7:45 PM | 11h 55m |
| April | 6:07 AM | 6:35 AM | 7:11 AM | 7:12 PM | 7:48 PM | 8:16 PM | 13h 14m |
| May | 5:28 AM | 5:58 AM | 6:37 AM | 7:40 PM | 8:18 PM | 8:48 PM | 14h 20m |
| June | 5:12 AM | 5:44 AM | 6:25 AM | 8:00 PM | 8:40 PM | 9:12 PM | 14h 55m |
| July | 5:26 AM | 5:57 AM | 6:36 AM | 7:58 PM | 8:38 PM | 9:09 PM | 14h 41m |
| August | 5:56 AM | 6:25 AM | 7:01 AM | 7:31 PM | 8:08 PM | 8:37 PM | 13h 44m |
| September | 6:26 AM | 6:53 AM | 7:28 AM | 6:46 PM | 7:21 PM | 7:48 PM | 12h 28m |
| October | 6:54 AM | 7:21 AM | 7:57 AM | 5:57 PM | 6:33 PM | 7:00 PM | 11h 12m |
| November | 6:27 AM | 6:55 AM | 7:35 AM | 4:18 PM | 4:57 PM | 5:26 PM | 10h 02m |
| December | 6:54 AM | 7:24 AM | 8:07 AM | 4:07 PM | 4:49 PM | 5:20 PM | 9h 25m |
Local time (America/New York), 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 Potomac Water Gap, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.0 hours on a moonless night), and the core peaks around 22° 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 | — | -2° | — |
| February | 5:18 AM – 5:28 AM | 0.2 | 12° | SE → SE |
| March | 4:27 AM – 5:47 AM | 1.3 | 18° | SE → SSE |
| April | 2:24 AM – 4:54 AM | 2.5 | 22° | SE → S |
| May | 12:26 AM – 4:06 AM | 3.7 | 22° | SE → S |
| June | 10:40 PM – 3:40 AM | 5.0 | 22° | SE → SSW |
| July | 10:32 PM – 2:12 AM | 3.7 | 22° | SSE → SW |
| August | 9:48 PM – 12:18 AM | 2.5 | 22° | S → SW |
| September | 8:52 PM – 10:12 PM | 1.3 | 18° | SSW → SW |
| October | 8:03 PM – 8:13 PM | 0.2 | 12° | 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 ≈ 20.42 mag/arcsec². Aurora needs roughly Kp 7.0+ 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 52% average cloud cover) and December as the cloudiest (66%). 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 | 68 | 76 | 78 | 89 | 91 | 98 | 103 | 100 | 98 | 95 | 78 | 72 |
| Low °F | -3 | -10 | -5 | 22 | 29 | 42 | 52 | 52 | 40 | 25 | 15 | 6 |
| Precip. (in) | 2.6 | 2.9 | 3.2 | 3.7 | 4.5 | 4.4 | 4.2 | 3.6 | 4.4 | 3.9 | 3.1 | 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 mountain pass
- Summit pull-outs often face one direction; use the sun azimuth table to see whether sunrise or sunset suits the view.
- Wildflowers bloom late at pass elevations — often July to early August in the Rockies and Sierra.
- Check road status before driving: many high passes close seasonally or after storms.
- Look for the road itself as a leading line — switchbacks from above make strong compositions.
- Bring a spare battery — cold weather and long exposures drain them fast.
Season: Summer and early autumn are the main season; winter visits depend on plowing and avalanche conditions.
Suggested gear: Telephoto lens, Tripod, Warm layers, Road-condition app. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
National Park Service rules. Under federal law (54 U.S.C. 100905), still photography in National Park Service areas needs a permit only when it (1) takes place where members of the public are not allowed, (2) uses models, sets or props that are not part of the location's natural or cultural resources or administrative facilities, or (3) would cause the park to incur additional administrative costs to monitor the activity. Ordinary visitor and most landscape photography needs no permit. Commercial filming rules are separate and have changed in recent years — confirm current requirements with the park before a paid shoot.
Drones: Launching, landing or operating unmanned aircraft (drones) is prohibited in National Park Service units under a 2014 Superintendent's closure (36 CFR 1.5), except where a park has issued specific written approval. Flying from outside the boundary over park land can also violate park rules and disturb wildlife.
Nearby photo spots
Other locations within 25 km of Potomac Water Gap, closest first.
Scenic Viewpoint
Mountain Pass
Mountain Peak
State Park
Mountain Pass
CaveMountain Pass
Covered BridgeCovered BridgeCampgrounds nearby (Recreation.gov)
- Huckleberry Hill Hiker-Biker Campsite4.0 km (2.5 mi)
- Antietam Creek Campsite11.2 km (7.0 mi) · reservable
- Bald Eagle Island Hiker-Biker Campsite14.2 km (8.8 mi)
- Calico Rocks Hiker-Biker Overnight (Hbo) Campsite16.8 km (10.4 mi)
- Killiansburg Cave Hiker-Biker Campsite16.8 km (10.5 mi)
FAQ
When is the best time to photograph Potomac Water Gap?
What time is golden hour at Potomac Water Gap?
Where does the sun rise and set at Potomac Water Gap?
Can you see the Milky Way from Potomac Water Gap?
Do you need a permit to photograph at Potomac Water Gap?
How far is Potomac Water Gap from Bolivar?
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.