Located in Otter Tail County, Minnesota, Otter Tail Lake is a lake at about 403 m (1,322 ft) above sea level. The nearest town is Perham, about 23 km (14 mi) away (Otter Tail Lake lies SSW of town).
Otter Tail Lake is a 21-square-mile (54 km2) lake in the west-central part of the U.S. state of Minnesota and is the largest lake in Otter Tail County.From the Wikipedia article “Otter Tail Lake”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Otter Tail Lake the sunrise point swings a long way through the year: about 54° (NE) at the June solstice and 124° (SE) in late December. Sunset moves from 306° (NW) in June to 236° (SW) in December, and the midday sun climbs to 67° in summer but only 20° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:27 AM | 90° E | 7:35 PM | 271° W | 43° | 12h 09m |
| June solstice (Jun 21) | 5:31 AM | 54° NE | 9:19 PM | 306° NW | 67° | 15h 49m |
| September equinox (Sep 22) | 7:10 AM | 89° E | 7:22 PM | 271° W | 44° | 12h 12m |
| December solstice (Dec 21) | 8:04 AM | 124° SE | 4:39 PM | 236° SW | 20° | 8h 35m |
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
Lakes reflect best in calm air — usually the first hour after sunrise, before breezes ripple the surface.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:29 AM | 8:03 AM | 8:51 AM | 4:14 PM | 5:03 PM | 5:36 PM | 9h 00m |
| February | 6:56 AM | 7:27 AM | 8:10 AM | 5:06 PM | 5:48 PM | 6:19 PM | 10h 21m |
| March | 7:06 AM | 7:36 AM | 8:16 AM | 6:49 PM | 7:28 PM | 7:58 PM | 11h 52m |
| April | 6:05 AM | 6:36 AM | 7:17 AM | 7:30 PM | 8:10 PM | 8:42 PM | 13h 34m |
| May | 5:15 AM | 5:50 AM | 6:34 AM | 8:06 PM | 8:50 PM | 9:25 PM | 14h 59m |
| June | 4:51 AM | 5:30 AM | 6:17 AM | 8:31 PM | 9:18 PM | 9:57 PM | 15h 47m |
| July | 5:08 AM | 5:46 AM | 6:31 AM | 8:27 PM | 9:13 PM | 9:50 PM | 15h 27m |
| August | 5:49 AM | 6:22 AM | 7:04 AM | 7:52 PM | 8:34 PM | 9:07 PM | 14h 12m |
| September | 6:31 AM | 7:01 AM | 7:41 AM | 6:57 PM | 7:36 PM | 8:06 PM | 12h 35m |
| October | 7:10 AM | 7:40 AM | 8:22 AM | 5:57 PM | 6:38 PM | 7:08 PM | 10h 57m |
| November | 6:52 AM | 7:25 AM | 8:11 AM | 4:05 PM | 4:51 PM | 5:24 PM | 9h 26m |
| December | 7:25 AM | 8:00 AM | 8:51 AM | 3:46 PM | 4:37 PM | 5:12 PM | 8h 37m |
Local time (America/Chicago), 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 Otter Tail Lake, the Milky Way core is visible in a dark sky from April through August. June gives the longest window (about 2.5 hours on a moonless night), and the core peaks around 15° above the southern horizon. Our light-pollution model puts the sky at about Bortle 2 (typical truly dark site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -5° | — |
| February | Below 10° in darkness | — | 6° | — |
| March | 5:40 AM – 5:50 AM | 0.2 | 11° | SSE → SSE |
| April | 3:42 AM – 4:42 AM | 1.0 | 14° | SSE → S |
| May | 1:37 AM – 3:27 AM | 1.8 | 15° | SSE → S |
| June | 12:07 AM – 2:37 AM | 2.5 | 15° | SSE → SSW |
| July | 11:45 PM – 1:25 AM | 1.7 | 15° | S → SSW |
| August | 10:35 PM – 11:25 PM | 0.8 | 13° | SSW → SSW |
| September | 9:20 PM – 9:20 PM | 0.0 | 11° | SSW → SSW |
| October | Below 10° in darkness | — | 6° | — |
| 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: 2 Bortle 2 — Typical truly dark site. The summer Milky Way shows rich structure; clouds look like black holes in the stars. Modeled zenith brightness ≈ 21.84 mag/arcsec². Aurora needs roughly Kp 4.0+ 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 50% average cloud cover) and December as the cloudiest (71%). 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 | 44 | 52 | 76 | 87 | 90 | 93 | 105 | 101 | 93 | 84 | 69 | 47 |
| Low °F | -47 | -33 | -29 | 4 | 24 | 38 | 44 | 39 | 28 | 5 | -8 | -32 |
| Precip. (in) | 0.6 | 0.7 | 1.2 | 2.2 | 3.2 | 4.1 | 3.6 | 2.9 | 3.0 | 2.5 | 0.8 | 1.0 |
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 lake
- After sunset, long exposures smooth wind ripples into glass.
- For mirror reflections, get low and close to the water; the reflection grows with a lower camera.
- A polarizer can remove reflections to show the lakebed — or keep them, depending on rotation.
- Mist often lifts off lakes on cold mornings after warm days, especially in autumn.
- Include shoreline rocks, reeds or a log as foreground to give the reflection depth.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Autumn mornings bring mist and fall color; high-elevation lakes are usually ice-free only from early summer to mid-autumn.
Suggested gear: Tripod, Circular polarizer, Wide-angle lens, Waterproof boots. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Otter Tail Lake, closest first.
FAQ
When is the best time to photograph Otter Tail Lake?
What time is golden hour at Otter Tail Lake?
Where does the sun rise and set at Otter Tail Lake?
Can you see the Milky Way from Otter Tail Lake?
Do you need a permit to photograph at Otter Tail Lake?
How far is Otter Tail Lake from Perham?
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.