Live Sky Report
What Can I See in the Sky Tonight in Yokohama, Kanagawa, Japan?
First Quarter moon at 54%, Mars shines at magnitude 1.0. Calculated for 35.43°, 139.65° (Asia/Tokyo).
Visible planets tonight
Mars, Saturn, Jupiter — brightest: Mars at mag 1.0 in Cancer
🔭 Tonight's Sky Report
📍 Yokohama, Kanagawa, Japan — Monday, October 19
Space weather observed: 9:00 PM UTC
Tonight's sky above Yokohama, Kanagawa, Japan
Above Yokohama, Kanagawa, Japan tonight, the sky is a live system: the Moon's illumination, which planets have cleared the horizon, and whether Earth's magnetosphere is quiet or churning all change hour by hour.
Local sky character in Yokohama
Northern mid-latitudes · northern hemisphere · 21 m elevation
- The north celestial pole stands 35.4° above the horizon, so stars within 35° of it never set from here.
- About 79% of the whole sky rises above the horizon at some point in the year from this latitude.
- The Milky Way's core in Sagittarius culminates about 25.6° up, staying low, so a clear southern horizon matters.
- At 21 m elevation, roughly 0% of the atmosphere's mass is already below you, which measurably reduces extinction near the horizon.
With a population above one million, Yokohama produces significant sky glow: expect the Moon, planets and bright stars from the centre, and travel outward for the Milky Way.
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Astronomy near Yokohama
Real great-circle distances from Yokohama, Kanagawa, Japan.
- Nobeyama Radio Observatory — observatory, 120 km away, 1350 m
Best nights this month in Yokohama
Calculated for these coordinates and today's date — not a fixed list.
- 2026-10-21 — Orionids peak — up to 20/hour
Radiant in Orion. Visible from both hemispheres. The Moon is 72% lit on peak night, so lunar interference is moderate.
- 2026-10-26 — Full Moon
A 100%-lit Moon washes out faint objects, but lunar terrain along the limb is at its most striking — plan bright targets and planets instead of deep sky.
- 2026-11-05 — Taurids peak — up to 5/hour
Radiant in Taurus. Favours the Northern Hemisphere, which includes Yokohama, Kanagawa, Japan. The Moon is 18% lit on peak night, so lunar interference is low.
- 2026-11-09 — Darkest night of the coming month
The Moon is only 0% illuminated, giving the least lunar interference in the next 30 nights — the best window for the Milky Way and faint deep-sky targets from Yokohama, Kanagawa, Japan.
- 2026-11-17 — Leonids peak — up to 15/hour
Radiant in Leo. Visible from both hemispheres. The Moon is 45% lit on peak night, so lunar interference is moderate.
Yokohama, Kanagawa, Japan stargazing questions
- What can I see in the sky tonight from Yokohama, Kanagawa, Japan?
- Tonight from Yokohama, Kanagawa, Japan expect a first quarter Moon at 54% illumination, with these naked-eye planets above the horizon after dark: Mars, Saturn, Jupiter. The night offers about 10.0 hours of true astronomical darkness.
- What planets are visible tonight in Yokohama, Kanagawa, Japan?
- Tonight in Yokohama, Kanagawa, Japan, Mars, Saturn, Jupiter are visible to the naked eye after dark, based on this location's real ephemeris for tonight.
- When does darkness start tonight in Yokohama, Kanagawa, Japan?
- Astronomical darkness begins at 6:26 PM local time in Yokohama, Kanagawa, Japan tonight, the moment the Sun drops more than 18° below the horizon and the sky becomes fully dark for faint-object observing.
- Can you see the aurora tonight in Yokohama, Kanagawa, Japan?
- Yokohama, Kanagawa, Japan is far enough from the pole that aurora only reaches overhead during a major geomagnetic storm — specifically when the planetary Kp index reaches about 9, a level reached only a handful of times per solar cycle.
- What is the stargazing light pollution level in Yokohama, Kanagawa, Japan?
- Yokohama, Kanagawa, Japan is a large metropolitan area — typically Bortle class 7–9 (bright, inner-city sky), where only the Moon, planets, and the brightest stars are visible. These are typical ranges for this population size, not a measured reading for this exact spot — use tonight's Moon phase and the best-nights list above to time a visit away from direct lighting.
- Does Yokohama, Kanagawa, Japan's elevation help stargazing?
- At 21 m you are above a meaningful fraction of the atmosphere, which reduces extinction and scintillation — the reason major observatories are sited high. Nobeyama Radio Observatory sits about 120 km from Yokohama, Kanagawa, Japan at 1350 m.
- What should I plan for observing near Yokohama, Kanagawa, Japan?
- High sites reward targets that suffer most from atmosphere: planets at high altitude, faint nebulae, and the Milky Way, which culminates around 25.6° here. Cold and thinner air are the practical constraints, not the sky.
- How dark does it actually get in Yokohama, Kanagawa, Japan tonight?
- About 10.0 hours of astronomical darkness (Sun more than 18° below the horizon). That is the real observing window for faint objects; brighter targets are workable from dusk onward.
Nearby cities
Real great-circle distance from Yokohama, Kanagawa, Japan.
More in Kanagawa
Other sky reports in the same region.
Sky tonight across Japan
Other cities in Japan with live sky reports.
Popular astronomy destinations
Aurora hubs, dark-sky sites, and observatory towns.
🛰️ ISS Visibility
No visible ISS passes currently predicted for this location.
☄️ Orionids peaks in 2 days
Up to 20 meteors/hour at peak, radiating from Orion.
Full viewing guide →Related astronomy for Yokohama, Kanagawa, Japan
Frequently Asked Questions
Is this just astronomy weather for Yokohama?
This page goes beyond ordinary astronomy weather -- it combines real local weather for astronomy, live space weather, and the space weather aurora connection into one live report for Yokohama, Kanagawa, Japan.
What are tonight's astronomy viewing conditions for Yokohama?
The sky viewing conditions badge above reflects the real astronomy viewing conditions for Yokohama, Kanagawa, Japan right now -- cloud cover, darkness, and moon interference combined, not moon phase alone. Good weather for stargazing depends on all of these together.