Osaka, Japan Stargazing Forecast

Osaka, Japan (34.69°, 135.5°) · Updated 03:01 UTC
63
Mixed
high confidence ⓘ
high · Forecast lead time

Based on how far ahead tonight is, forecasts are most reliable within 24–48 hours.

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

Worth a short session
BEST 11:00–19:00 (8h)
Mostly clear skies but bright moonlight limits faint objects. Delta Aquariids meteor shower active.
Sunset
10:01
Sunrise
20:07
Usable Hours
8/8
Moon
98%
Visible Planets
♂ Mars21° E
♄ Saturn57° SE
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Hour-by-hour scores · Planet rise/set & visibility · ISS & satellite passes · Moon detail · Full score breakdown · Aurora & observer profiles

Stargazing in Osaka, Japan

Osaka sits in the densely populated Kansai region, with Bortle 8 light pollution across the metropolis. Darker skies require heading into the surrounding mountains: the Kii Peninsula to the south and the highlands of Nara and Wakayama reach Bortle 4 within 90 minutes, with Bortle 3 deeper in. Japan's humid summers bring haze and the rainy season, while autumn and winter high-pressure systems deliver crisp, clear nights. At 34.7°N, the southern sky is well placed for the summer Milky Way from a dark mountain site away from the Kansai light dome.

Osaka, Japan Stargazing FAQ

Where can I stargaze near Osaka?∨
The mountains of the Kii Peninsula to the south, and the highlands of Nara and Wakayama, reach Bortle 4 within 90 minutes and darker deeper in. Mount Koya and the surrounding forests are popular dark-sky escapes from the Kansai light dome.
Is Osaka good for astronomy?∨
The city has heavy Bortle 8 light pollution, but the surrounding mountains offer genuinely dark skies within a 90-minute drive. The humid summer climate brings haze, so clear autumn and winter nights are best.
When is the best time to stargaze near Osaka?∨
Autumn and winter high-pressure systems bring the clearest, driest skies. Summer is humid with a rainy season. The Milky Way core is best in summer from a dark site, despite the seasonal haze.

Stargazing guides

Is Tonight Good for Stargazing?

The answer depends on five things you can check right now.

Light Pollution & the Bortle Scale

How dark is your sky — and what difference does it make?

What Planets Are Visible Tonight?

Real visibility data for all 7 naked-eye and telescope planets, calculated for your location.

Meteor Shower Calendar 2026

Every shower this year — peak dates, expected rates, moon interference, and the two you absolutely cannot miss.
Check light pollution for this area ↗

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