Waterton-Glacier International Peace Park is a dark sky place in Glacier County, Montana. The nearest town is Columbia Falls, about 72 km (45 mi) away (Waterton-Glacier International Peace Park lies NNE of town). It is certified as an International Dark Sky Park by DarkSky International.
The Waterton-Glacier International Peace Park is the union of Waterton Lakes National Park in Canada and Glacier National Park in the United States. Both parks are declared Biosphere Reserves by UNESCO and their union as a World Heritage Site.From the Wikipedia article “Waterton-Glacier International Peace Park”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Waterton-Glacier International Peace Park the sunrise point swings a long way through the year: about 52° (NE) at the June solstice and 126° (SE) in late December. Sunset moves from 309° (NW) in June to 234° (SW) in December, and the midday sun climbs to 64° in summer but only 18° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:39 AM | 89° E | 7:48 PM | 271° W | 41° | 12h 09m |
| June solstice (Jun 21) | 5:32 AM | 52° NE | 9:44 PM | 309° NW | 64° | 16h 12m |
| September equinox (Sep 22) | 7:23 AM | 89° E | 7:35 PM | 271° W | 41° | 12h 13m |
| December solstice (Dec 21) | 8:28 AM | 126° SE | 4:41 PM | 234° SW | 18° | 8h 13m |
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
Certified dark sky places offer protected night skies — plan around the new moon and the Milky Way core season.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:49 AM | 8:25 AM | 9:17 AM | 4:14 PM | 5:06 PM | 5:42 PM | 8h 41m |
| February | 7:12 AM | 7:45 AM | 8:30 AM | 5:11 PM | 5:56 PM | 6:29 PM | 10h 11m |
| March | 7:18 AM | 7:50 AM | 8:32 AM | 6:59 PM | 7:41 PM | 8:12 PM | 11h 51m |
| April | 6:12 AM | 6:45 AM | 7:28 AM | 7:45 PM | 8:27 PM | 9:01 PM | 13h 42m |
| May | 5:16 AM | 5:54 AM | 6:41 AM | 8:25 PM | 9:12 PM | 9:50 PM | 15h 17m |
| June | 4:49 AM | 5:32 AM | 6:22 AM | 8:52 PM | 9:42 PM | 10:25 PM | 16h 11m |
| July | 5:08 AM | 5:48 AM | 6:37 AM | 8:48 PM | 9:36 PM | 10:17 PM | 15h 48m |
| August | 5:54 AM | 6:29 AM | 7:13 AM | 8:09 PM | 8:53 PM | 9:28 PM | 14h 24m |
| September | 6:41 AM | 7:13 AM | 7:55 AM | 7:09 PM | 7:51 PM | 8:22 PM | 12h 38m |
| October | 7:25 AM | 7:57 AM | 8:40 AM | 6:04 PM | 6:47 PM | 7:19 PM | 10h 51m |
| November | 7:11 AM | 7:46 AM | 8:36 AM | 4:07 PM | 4:56 PM | 5:31 PM | 9h 10m |
| December | 7:47 AM | 8:24 AM | 9:19 AM | 3:44 PM | 4:39 PM | 5:17 PM | 8h 15m |
Local time (America/Denver), 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 Waterton-Glacier International Peace Park, the Milky Way core is visible in a dark sky from May through July. June gives the longest window (about 2.5 hours on a moonless night), and the core peaks around 12° above the southern horizon. Our light-pollution model puts the sky at about Bortle 1 (excellent dark-sky site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -6° | — |
| February | Below 10° in darkness | — | 4° | — |
| March | Below 10° in darkness | — | 8° | — |
| April | 4:27 AM – 4:37 AM | 0.2 | 11° | SSE → SSE |
| May | 2:36 AM – 3:16 AM | 0.7 | 12° | SSE → S |
| June | 12:26 AM – 2:56 AM | 2.5 | 12° | SSE → SSW |
| July | 12:37 AM – 1:07 AM | 0.5 | 11° | S → SSW |
| August | 11:04 PM – 11:04 PM | 0.0 | 10° | SSW → SSW |
| September | Below 10° in darkness | — | 8° | — |
| October | Below 10° in darkness | — | 4° | — |
| November | Below 10° in darkness | — | -5° | — |
| 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: 1 Bortle 1 — Excellent dark-sky site. The Milky Way casts faint shadows; zodiacal light and airglow are obvious. Modeled zenith brightness ≈ 21.94 mag/arcsec². Aurora needs roughly Kp 3.5+ 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 39% average cloud cover) and March as the cloudiest (72%). 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 | 34 | 38 | 46 | 66 | 75 | 83 | 90 | 92 | 86 | 74 | 54 | 37 |
| Low °F | -32 | -39 | -37 | -12 | 15 | 23 | 34 | 32 | 13 | -3 | -27 | -40 |
| Precip. (in) | 4.3 | 3.8 | 4.1 | 3.4 | 3.6 | 4.5 | 1.3 | 1.4 | 2.3 | 3.4 | 4.4 | 4.2 |
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 dark sky place
- Use red light only and keep it pointed down to protect others' night vision.
- Set focus on a bright star with live-view magnification, then tape the focus ring.
- Use the NPF rule below to choose the longest exposure before stars trail.
- Many parks host star parties and night programs during summer.
- Use the Milky Way table to find months and hours when the core is above the horizon.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Milky Way core season runs roughly March to October; winter offers long nights and bright winter constellations.
Suggested gear: Fast wide lens (f/1.4–f/2.8), Sturdy tripod, Red headlamp, Intervalometer. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 40 km of Waterton-Glacier International Peace Park, closest first.
Lake
Mountain Peak
Waterfall
Mountain Peak
Mountain Peak
LakeWaterfall
LakeWaterfallCampgrounds nearby (Recreation.gov)
FAQ
When is the best time to photograph Waterton-Glacier International Peace Park?
What time is golden hour at Waterton-Glacier International Peace Park?
Where does the sun rise and set at Waterton-Glacier International Peace Park?
Can you see the Milky Way from Waterton-Glacier International Peace Park?
Do you need a permit to photograph at Waterton-Glacier International Peace Park?
How far is Waterton-Glacier International Peace Park from Columbia Falls?
Sources
Location data: DarkSky International (via 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.