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JapanCountry

Dark skies of Japan.

31 sky guides in Japan, out of 89 places we know there.

1Bortle82islandMinamitorishimaJapanJapan21.90 mag/arcsec² · Sep–Nov1Bortle82islandOkinotorishimaJapanJapan21.90 mag/arcsec² · Mar–May1Bortle82volcanoMount SuribachiJapanJapan21.90 mag/arcsec² · Sep–Oct2Bortle81islandYakushimaJapanJapan21.88 mag/arcsec² · Aug–Oct1Bortle81islandIwo JimaJapanJapan21.89 mag/arcsec² · Sep–Oct2Bortle81volcanoDaisetsuzan Volcanic GroupJapanJapan21.80 mag/arcsec² · Nov–Jan2Bortle80volcanoMount TokachiJapanJapan21.80 mag/arcsec² · Oct2Bortle80volcanoMount RishiriJapanJapan21.88 mag/arcsec² · Sep–Oct2Bortle80volcanoMount RausuJapanJapan21.88 mag/arcsec² · Oct3Bortle79volcanoMount OntakeJapanJapan21.61 mag/arcsec² · Mar–Apr, Oct–Nov2Bortle79islandTanegashimaJapanJapan21.87 mag/arcsec² · Aug1Bortle77islandAmami ŌshimaJapanJapan21.89 mag/arcsec² · Aug–Sep2Bortle77islandIriomote IslandJapanJapan21.81 mag/arcsec² · Jul–Sep2Bortle77canyonSounkyoJapanJapan21.79 mag/arcsec² · Nov–Jan2Bortle76islandKunashir IslandJapanJapan21.88 mag/arcsec² · Oct2Bortle75islandHokkaidōJapanJapan21.78 mag/arcsec² · Jan, Oct3Bortle75astronomical observatoryKuma Kogen Astronomical ObservatoryJapanJapan21.55 mag/arcsec² · Oct–Feb3Bortle75islandTsushima IslandJapanJapan21.49 mag/arcsec² · Oct–Jan3Bortle74astronomical observatoryGeisei observatoryJapanJapan21.51 mag/arcsec² · Oct–Feb2Bortle74International Dark Sky ParkIriomote-Ishigaki National ParkJapanJapan21.81 mag/arcsec² · Jul–Sep3Bortle73astronomical observatoryNachi-Katsuura ObservatoryJapanJapan21.52 mag/arcsec² · Feb, Aug, Oct–Dec3Bortle73astronomical observatoryKiso ObservatoryJapanJapan21.41 mag/arcsec² · Mar–Apr, Oct–Nov3Bortle72astronomical observatoryNobeyama radio observatoryJapanJapan21.26 mag/arcsec² · Nov–Feb3Bortle71astronomical observatorySaji ObservatoryJapanJapan21.50 mag/arcsec² · Apr, Aug, Oct–Nov4Bortle70astronomical observatoryBisei Spaceguard CenterJapanJapan21.22 mag/arcsec² · Mar, Oct–Nov3Bortle70astronomical observatoryKamioka Gravitational wave detectorJapanJapan21.41 mag/arcsec² · Mar–Apr, Oct–Nov4Bortle65astronomical observatoryNational Astronomical Observatory of JapanJapanJapan20.83 mag/arcsec² · Mar–Apr, Oct–Nov5Bortle58astronomical observatoryGekko ObservatoryJapanJapan20.19 mag/arcsec² · Dec–Jan6Bortle44astronomical observatoryNihondaira ObservatoryJapanJapan19.17 mag/arcsec² · Dec–Jan6Bortle42astronomical observatoryKitami ObservatoryJapanJapan19.34 mag/arcsec² · Sep–Oct7Bortle34astronomical observatoryŌizumi ObservatoryJapanJapan18.42 mag/arcsec² · Dec–Jan

Other places in Japan

  • YonaguniBortle 2
  • OkinoshimaBortle 3
  • Rishiri IslandBortle 2
  • Sado IslandBortle 2
  • Hachijō-jimaBortle 3
  • Lake KussharoBortle 2
  • Izu ŌshimaBortle 3
  • Iki IslandBortle 3
  • Lake TowadaBortle 2
  • Lake AkanBortle 2
  • Lake MashūBortle 2
  • Mount NantaiBortle 3
  • Akan Volcanic ComplexBortle 2
  • Mount PoroshiriBortle 2
  • Lake ChūzenjiBortle 3
  • HachimantaiBortle 2
  • Mount NorikuraBortle 3
  • Mount EBortle 2
  • Mount TomuraushiBortle 2
  • Mount AkaishiBortle 3
  • Mount HijiriBortle 3
  • Mount MiharaBortle 3
  • Mount Nikkō-ShiraneBortle 3
  • Mount ShiomiBortle 3

Plan the night

A guided night, a bed nearby, a car.

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The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?

Same idea, other landscapes: field atlases built on open data, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Visit mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Visit islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Visit riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.Visit canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit cavesCavernyasEvery cave with its real depth and length: the rock above, the temperature inside all year, and how to visit.Visit
dark skiesDarkskyasWhere the night is still dark: the sky of every place, the Milky Way month by month, the Moon, eclipses and auroras.You are here
viewpointsViewyasEvery viewpoint with its real 360° panorama: the peaks you can name, how far you see and where the sun sets.Coming soonVisit
birdwatchingBirdyasEvery bird sanctuary and wetland with the species recorded month by month: who is resident, who comes for the summer, who only passes through.Coming soonVisit
forestsForestyaEvery forest with its land-cover rings, what grows and lives in it, and the best months to walk it.Coming soonVisit