Seattle Stargazing: Where to Find Clear Dark Skies
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City lights of Portland, Seattle and Vancouver along the dark Pacific Northwest coast at night, under a band of airglow, from the International Space Station

Stargazing Destination Guide · Seattle, Tacoma and the Puget Sound

Seattle Stargazing: Where to Find Dark, Clear Skies Within Three Hours (2026)

Seattle stargazers fight two problems at once: a city of four million under a bright glow, and some of the cloudiest skies in the country. The answer to both is the same. Go up, or go east. Mount Rainier's high meadows sit above the marine cloud on many summer nights, the Olympic Mountains throw a rain shadow over Hurricane Ridge, and once you cross the Cascades the clouds thin and the sky darkens together. This guide to stargazing near Seattle, Tacoma and Bellevue covers the free telescope nights in the city, the mountain sites and the short season when they are open, and how to read the forecast here.

Sky in the CityBortle 8–9
Darkest Within 3 HoursBortle 2 (Sunrise at Rainier)
Free Telescope NightsMonthly in Shoreline and Lakewood
Best SeasonLate July to September

Photo: Portland, Seattle and Vancouver from the International Space Station, March 2025. NASA, Expedition 72

By Telescope Advisor Editorial TeamPublished: Updated: Reviewed & approved by Juhi Sahni, Senior Editor Editorial Standards

Stargazing Near Seattle at a Glance

Drive times are from downtown Seattle; the Olympic Peninsula times include the Bainbridge or Edmonds ferry. Bortle figures combine light-pollution maps with what the Seattle and Tacoma clubs report from their sites. In this region the column that matters most is the last one. A Bortle 2 site under cloud is worth nothing, so the list is built around where the sky is most often clear as well as dark.

LocationBortleFrom Downtown SeattleNight AccessClear-Sky Odds
Theodor Jacobsen Observatory, University of Washington8–915 min northFree open houses, April to SeptemberRuns rain or shine with a talk
Paramount Park, Shoreline825 min northMonthly free club star partyLowland; cancelled when cloudy
Pierce College Fort Steilacoom, Lakewood6–750 min southMonthly free club nights with a dome showLowland
Cle Elum and the Teanaway, east of Snoqualmie Pass3–41 hr 30 min eastForest roads and state parksMuch better: past the Cascade crest
Paradise, Mount Rainier National Park2–32 hr south-eastOpen year-round; summer ranger star partiesOften above the marine cloud
Sunrise, Mount Rainier National Park22 hr 15 min south-eastRoad open about July to late SeptemberThe drier east side of the mountain
Hurricane Ridge, Olympic National Park2–32 hr 45 min with ferrySummer telescope programmes; check road hoursAbove the Olympic rain shadow
Artist Point, Mount Baker2–32 hr 45 min northSummer and early autumn onlyHigh, but on the wet side of the range

Clouds, Rain Shadows and Short Summer Nights

Seattle sits on a narrow strip of land between Puget Sound and Lake Washington, and the metro runs 100 miles north to south from Everett to Tacoma, hemmed in by water on one side and the Cascades on the other. The glow follows that corridor, so the darkness comes quickly once you leave it sideways: east into the mountains, or west across the Sound to the Kitsap and Olympic peninsulas. Within an hour of downtown the sky reaches Bortle 4 in the Cascade foothills, darker than anything that close to Chicago or Los Angeles.

Clouds are the real constraint. From October to June, Pacific storms and marine stratus cover the lowlands most nights, and the Puget Sound convergence zone can build cloud over Everett and Seattle when the rest of the region is clear. Two features of the mountains help. The Olympic Mountains wring the moisture out of westerly storms, leaving a rain shadow over Sequim, Port Angeles and Hurricane Ridge, which see far less rain than Seattle. The Cascade crest does the same on a larger scale: Cle Elum, 80 miles east, often sits under clear sky when Seattle is grey. In summer, the marine layer usually tops out a few thousand feet up, so Paradise and Sunrise at Rainier are frequently clear above it.

Latitude is the last factor. At 47.6° north, around the June solstice the Sun dips only about 19 degrees below the horizon at midnight, so true astronomical darkness lasts barely an hour. By mid-August there are several hours of real night, and by September the nights are long and the clear-weather season is still holding. That is why the region's star parties cluster from late July to September. For Goldendale Observatory and the high desert of eastern Washington, see our Washington State stargazing guide.

Seattle between Puget Sound and Lake Washington, photographed from the International Space Station in June 2026

Seattle on its isthmus between Puget Sound, at left, and Lake Washington, from the International Space Station in June 2026. The water on both sides is why the city's glow runs north and south in a narrow band. Photo: NASA, Expedition 74.

Free Telescope Nights in Seattle and Tacoma

Because the weather cancels so many nights, the city programmes are worth knowing well. Two of them carry on with a talk when it clouds over.

Theodor Jacobsen Observatory, University of Washington

The University of Washington's historic observatory stands about 100 yards inside the campus's north entrance at NE 45th Street and 17th Avenue NE, and its telescope dates from 1895. The Jacobsen Observatory holds free public open houses on the first and third Tuesday evenings from April to September, rain or shine: a 45 to 50 minute talk by a student or a member of the astronomy community, questions, and then, if the sky allows, the dome opens and the 1895 telescope is pointed at the Moon, a planet or a bright star. Tickets are free but registration is required because the room and the dome are small. Pay parking is in the adjoining N5 lot.

Seattle Astronomical Society Star Parties

The Seattle Astronomical Society runs free monthly public star parties at Paramount Park in Shoreline, 15300 8th Avenue NE, with sessions listed on November 14 and December 5, 2026, and in the warmer months on the west shore of Green Lake. Volunteers bring their own telescopes and binoculars, the events suit all ages, and a red headlamp is the one thing to bring. They are cancelled when the sky is completely cloudy or it rains, so check the society's site on the day.

Tacoma Astronomical Society at Pierce College

South Sound observers have the Tacoma Astronomical Society, which holds free monthly public nights on Saturday evenings at the Science Dome in the Rainier Building at Pierce College Fort Steilacoom, 9401 Farwest Drive SW in Lakewood. Each session has a talk or demonstration indoors whatever the weather, then telescope viewing if the sky is clear. Free tickets are recommended and are released about a month ahead; donations are welcome. In summer the society also takes its telescopes to state parks, including Belfair on the Hood Canal and the Mineral Lake area near Rainier.

Top Pick: Above the Clouds

Mount Rainier: Paradise and Sunrise

Two hours from downtown, Mount Rainier National Park gives Seattle its best chance of a dark, clear night. Paradise, at 5,400 feet on the south side of the mountain, is open all year and is where the park's summer star parties happen: Dark Sky Rangers set up telescopes and binoculars in the plaza by the Jackson Visitor Center on scheduled evenings, weather permitting, with a backup indoor session making star finders if it clouds over. Tacoma Astronomical Society and other volunteer astronomers have brought their telescopes to these nights for years. The sky is Bortle 2 to 3, the summer Milky Way rises over the Tatoosh Range, and on many nights the lowland cloud lies below you like a sea.

Sunrise, at 6,400 feet on the north-east side, is the highest point you can drive to in the park and sits on the drier side of the mountain, often clear when Paradise is in cloud. Its road opens only in summer, usually around early July, and closes in late September, so it is a short season. The sky there is about Bortle 2, the darkest drivable sky within three hours of Seattle. Pay the park entry fee, check the park's astronomy hotline on 360-569-6230 for star-party updates, and bring winter layers: both sites are near freezing on clear nights even in August.

Mount Rainier Ranger Programs →
Snow-covered Mount Rainier and its radiating glaciers, photographed from the International Space Station

Photo: NASA, Expedition 62

West: Hurricane Ridge and the Olympic Rain Shadow

Hurricane Ridge, 17 miles up from Port Angeles in Olympic National Park, puts you at 5,242 feet with the Olympic range to the south and the Strait of Juan de Fuca to the north. It sits on the edge of the Olympic rain shadow, so the north side of the peninsula is clear more often than Seattle. The sky is Bortle 2 to 3, with Victoria's glow across the strait the only real light. In summer a volunteer telescope programme at the ridge has run dark-sky sessions late on clear evenings, free with park entry and cancelled for cloud; check the park's calendar for the current season. The visitor lodge burned in 2023, so facilities are limited, and the road's hours change with the season and the rebuilding. Confirm them before driving, because the trip from Seattle takes close to three hours including the ferry.

East and North: Over the Cascades, and Artist Point

When the forecast shows cloud everywhere west of the mountains, the most reliable fix is Interstate 90 over Snoqualmie Pass. Once you drop past the Cascade crest towards Cle Elum, about an hour and a half from downtown, the cloud often breaks and the sky darkens to Bortle 3 to 4 along the Teanaway and the forest roads north of town. The weather difference is big enough that Seattle observers routinely check the Cle Elum and Ellensburg forecasts before their own. Further east, past Ellensburg, the high desert of central Washington is darker still, and our Washington State stargazing guide covers it. Bring a Northwest Forest Pass or Discover Pass for the trailheads and state parks.

North, at the end of the Mount Baker Highway, Artist Point sits at about 5,100 feet between Mount Baker and Mount Shuksan in the Mount Baker-Snoqualmie National Forest, with one of the finest mountain foregrounds in the state for Milky Way photography. Snow keeps the last stretch of road closed for most of the year, typically opening only from mid-summer to early autumn, and the site is on the wet side of the range, so it rewards a good forecast rather than a guess.

Worth the Drive: The Columbia Gorge and the Aurora

Three and a half hours south-east, the dry country around Goldendale above the Columbia Gorge is the classic weekend trip from Seattle. Goldendale Observatory State Park itself has had its solar and evening programs cancelled since August 2026 because of staffing, and its grounds now close at dusk, so check the park's page before counting on a telescope night there. Our Washington State guide covers it, along with the Okanogan high desert and the Palouse. This page stops at the three-hour line.

Seattle's latitude also brings the aurora within reach. During strong geomagnetic storms the northern lights have been photographed from the Puget Sound shoreline, and from the dark sites above the clouds they can be seen with the naked eye. When the space-weather forecast reaches the strong-storm level, head for a site with a clear northern horizon: the shore at Kitsap or Whidbey, or the Cascade passes. Our Kp index and aurora forecast guide explains how to read the forecast, and the best places to see the northern lights in the USA ranks the sites.

The Milky Way rising over the green aurora on the limb of Earth, photographed from the International Space Station

The Milky Way and the aurora from the International Space Station, January 2025. Strong storms bring the same green glow low over the northern horizon at Seattle's latitude. Photo: NASA/Don Pettit.

When to Go: Seattle Stargazing Through the Year

Seattle has the shortest good season of any city in our guides, and it lines up exactly with the mountain roads being open. Plan around it.

MonthsConditionsWhere to GoWhat to See
Late July – SeptemberThe dry season; mountain roads open; real darkness returns from AugustSunrise, Paradise, Hurricane Ridge, Artist PointThe Milky Way over the volcanoes, the Perseids August 12–13
October – NovemberStorms return; long nights and occasional clear spells; high roads closingCle Elum side, Paramount Park, Pierce CollegeAndromeda, Saturn, the Orionids and Leonids
December – MarchCloudiest months; rare cold, clear nights after a front passesLowland parks on clear nights; east of the pass with tractionThe Orion Nebula, Jupiter, the Geminids December 13–14
April – early JulyImproving weather but very short nights by June; Jacobsen open houses beginJacobsen Observatory, east of the CascadesGalaxy season in spring, noctilucent cloud hunting in June

Pair the season with a new Moon using our 2026 astronomy events calendar. Then check satellite imagery rather than the forecast: if the marine layer is filling the Sound at sunset but the Cascades are clear, go up.

What to Bring in the Northwest

  • Dew protection first. Damp maritime air coats optics within minutes; a dew shield is the minimum and a heater strip pays for itself.
  • Winter clothing for summer mountains. Paradise, Sunrise and Hurricane Ridge fall to near freezing on clear August nights.
  • The right pass. A national parks pass for Rainier and the Olympics, a Northwest Forest Pass or Discover Pass for forest trailheads and state parks.
  • Ferry times. Late-night sailings back from Kingston or Bainbridge are sparse; check the schedule before an Olympic trip.
  • Traction tyres from November to April for Snoqualmie Pass and the road to Paradise.
  • A plan B for clouds. The Jacobsen and Pierce College programmes carry on with a talk when the sky closes.

Best Telescopes and Binoculars for Seattle Skies

In a region where clear nights are rare and often short notice, the best instrument is the one you will actually take out: quick to set up, resistant to dew, and small enough for a car on the way to a mountain road.

Celestron SkyMaster 15x70 binoculars

Celestron SkyMaster 15x70

For sudden clear spells

Ready in seconds when a gap opens over the Sound, and the right tool for the Rainier star parties, where the big telescopes are provided.

View on Amazon ->
Sky-Watcher Heritage 130P tabletop Dobsonian

Sky-Watcher Heritage 130P

For apartments and ferry trips

A collapsible 5-inch that stores in a Capitol Hill closet, rides the ferry on a back seat and sets up on a picnic table at Hurricane Ridge.

View on Amazon ->
Sky-Watcher Classic 200P 8-inch Dobsonian

Sky-Watcher Classic 200P (8")

For Sunrise and east-side nights

When you finally have a Bortle 2 sky in August, an 8-inch makes the most of it: globular clusters resolved to the core and the Veil Nebula with a filter.

View on Amazon ->

Observing from a Ballard rooftop or a Bellevue backyard most nights? The best telescopes for urban stargazing guide is written for that sky, and is dew bad for a telescope covers the problem every Northwest observer meets first.


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Astronomy Clubs Around Puget Sound

The Seattle Astronomical Society runs the free public star parties at Paramount Park and Green Lake and is the best first contact for anyone in Seattle, Shoreline or the Eastside. The Tacoma Astronomical Society holds monthly public nights at Pierce College Fort Steilacoom, takes telescopes to state parks around the South Sound in summer, and has supported the Paradise star parties at Mount Rainier. The University of Washington astronomy department and its students run the Jacobsen Observatory open houses. Clubs in Everett and on the Kitsap and Olympic peninsulas run their own events. For more, see our astronomy club directory, and if your group is missing you can submit it here.




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Seattle Stargazing FAQ

Where is the best place to stargaze near Seattle?

Mount Rainier National Park. Paradise, two hours away and open all year, has summer ranger star parties and a Bortle 2 to 3 sky that is often above the marine cloud. Sunrise, open only from about July to late September, is darker still and on the drier side of the mountain. When the west side is cloudy, the area around Cle Elum east of Snoqualmie Pass is the most reliable alternative.

Why is it so hard to stargaze in Seattle?

Three reasons: the city glow along the Puget Sound corridor, frequent cloud and marine stratus from October to June, and very short summer nights at 47.6 degrees north, when true darkness lasts only about an hour around the June solstice. The best compromise is August and September, when the weather is dry and the nights are long enough.

Are there free star parties in Seattle?

Yes. The Seattle Astronomical Society holds free monthly public star parties at Paramount Park in Shoreline and, in the warmer months, at Green Lake. The Tacoma Astronomical Society hosts free monthly nights at Pierce College Fort Steilacoom in Lakewood. All are cancelled for full cloud or rain, so check the clubs' websites on the day.

Can you visit the observatory at the University of Washington?

Yes. The Theodor Jacobsen Observatory holds free public open houses on the first and third Tuesday evenings from April to September, rain or shine. Each starts with a talk and questions, then the dome opens for telescope viewing if the sky is clear. Registration is required because space is limited.

Can you see the Milky Way from Mount Rainier?

Yes, clearly. From Paradise and Sunrise on a clear, moonless night between late July and September the summer Milky Way stretches across the sky with visible dust lanes, often with the lowland cloud spread out below. Sunrise is darker, but its road is open only in summer.

Can you see the northern lights from Seattle?

Occasionally, during strong geomagnetic storms. In the city the glow is faint and best captured on a phone camera; from a dark site with a clear northern horizon, such as the Kitsap or Whidbey shoreline or the mountain passes, it can be seen with the naked eye. Watch the space-weather forecast for storm-level activity.

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