Osaka, Japan Clear Sky Chart

Osaka, Japan (34.69°, 135.5°) · Updated 14:31 JST
48
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.

Marginal, check the window
Mostly clear skies with very low moonlight. Clear but hazy — low transparency is the main limit tonight, washing out fainter targets.
Sunset
18:06
Sunrise
05:40
Usable Hours
0/10
Moon
10%
Visible Planets
♀ Venus15° SW
♂ Mars39° E
♃ Jupiter16° E
♄ Saturn58° S
⛢ Uranus75° SE
♆ Neptune55° S
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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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