Tokyo, Japan Stargazing Forecast

Tokyo, Japan (35.68°, 139.69°) · Updated 11:05 UTC
62
Mixed
high confidence
high · Forecast stability

Tonight's forecast has held steady across recent updates. We compare how much tonight's score has moved across our recent forecast updates, a score that's held steady is more trustworthy.

Confidence reflects how trustworthy the forecast is, it doesn't change the score.

Worth a short session
BEST 11:00–19:00 (8h)
Near-perfect skies but bright moonlight limits faint objects. Delta Aquariids meteor shower peaks tonight (ZHR ~25).
Sunset
09:47
Sunrise
19:48
Usable Hours
8/8
Moon
100%
Visible Planets
♂ Mars20° E
♄ Saturn55° SE
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Stargazing in Tokyo, Japan

Tokyo's vast metropolitan area creates Bortle 9 conditions across the Kanto Plain, but the Moon, planets, and bright targets remain visible. The mountains of Chichibu (90 minutes west) offer Bortle 4 skies, and Mount Fuji's fifth station provides high-altitude access. Japan's tsuyu (rainy season, June–July) is the worst period; autumn brings the clearest conditions with stable Pacific high pressure. Winter nights are cold but often crystal clear, with excellent seeing.

Tokyo, Japan Stargazing FAQ

Can you see stars in Tokyo?
Tokyo's Bortle 9 conditions make deep-sky viewing impossible from the city, but planets, the Moon, and the very brightest stars remain visible on clear nights. The National Astronomical Observatory in Mitaka hosts public events.
Where is the best dark sky near Tokyo?
The mountains of Chichibu, about 90 minutes west by train, offer Bortle 4 skies. Mount Fuji's fifth station provides high-altitude access. The Izu Peninsula and Nagano Prefecture are popular dark-sky destinations.
When is the best time to stargaze near Tokyo?
Autumn (October-November) brings the clearest conditions with stable Pacific high pressure. Winter nights are cold but often crystal clear with excellent seeing. Avoid the rainy season (tsuyu) in June-July.

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