What planets are visible tonight?

Which planets are visible depends on your date and location. Venus, Jupiter, Mars, and Saturn are the four naked-eye planets that are frequently visible; Mercury is visible only in brief windows near sunrise or sunset. Enter your city above and the report will list the planets currently above the horizon after dark.

Can I see the Northern Lights tonight?

Aurora visibility depends on the Kp index and your geomagnetic latitude. At Kp 3, aurora is typically visible only near the Arctic and Antarctic circles. At Kp 5 (a G1 storm), the auroral oval expands south into the northern U.S. and northern Europe. At Kp 7+ it can reach mid-latitudes. The report above compares your latitude to the current auroral boundary in real time.

Is there a meteor shower tonight?

There are around a dozen major meteor showers each year. The report above shows the next active shower and how many days until its peak. For best viewing, look after midnight from a dark location with the shower's radiant above the horizon.

When will the ISS pass over tonight?

The International Space Station passes overhead multiple times per day, but only some passes are visible (bright, after dusk or before dawn, and above the horizon). The report above shows the next visible pass time for your location, computed from live NORAD orbital elements.

What can I see in the sky tonight from Arcos de Valdevez, Viana do Castelo, Portugal?

Tonight from Arcos de Valdevez, Viana do Castelo, Portugal expect a new moon Moon at 0% illumination, with these naked-eye planets above the horizon after dark: Venus, Jupiter, Mercury, Saturn, Mars. The night offers about 6.5 hours of true astronomical darkness.

Is light pollution a problem in Arcos de Valdevez, Viana do Castelo, Portugal?

Arcos de Valdevez, Viana do Castelo, Portugal is small enough that the Milky Way can be visible on clear, moonless nights away from the immediate centre. This page's Moon and darkness figures tell you the other half of the story.

When can I see the Milky Way from Arcos de Valdevez, Viana do Castelo, Portugal?

The core reaches about 19.2° altitude, so target the moonless nights listed in the best-nights section and get away from the city core.

How dark does it actually get in Arcos de Valdevez, Viana do Castelo, Portugal tonight?

About 6.5 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.

Live Sky Report

What Can I See in the Sky Tonight in Arcos de Valdevez, Viana do Castelo, Portugal?

New Moon moon at 0%, Venus shines at magnitude -4.4. Calculated for 41.85°, -8.42° (Europe/Lisbon).

Moon

New Moon

0% lit

Sunset

8:36 PM

Dusk 10:23 PM

Dark hours

6.5 h

Dawn 4:53 AM

Aurora

Needs Kp 8.4+

Belt 58°

Visible planets tonight

Venus, Jupiter, Mercury, Saturn, Mars — brightest: Venus at mag -4.4 in Virgo

🔭 Tonight's Sky Report

📍 Arcos de Valdevez, Viana do Castelo, Portugal — Wednesday, August 12

⭐ Stargazing—

🌙 MoonNew Moon • 0% Illumination

🪐 Visible planetsMars, Saturn

🌠 Meteor activityDraconids in 57 days

🌌 Milky WayVisible after dark, low moonlight

🛰️ ISSLoading…

🌈 Aurora—

☁️ Cloud cover—

🌡️ Temperature—

Tonight's sky above Arcos de Valdevez, Viana do Castelo, Portugal

Skywatchers in Arcos de Valdevez, Viana do Castelo, Portugal have the same live tools professional observers use — a real ephemeris, live Kp readings from NOAA SWPC, and hourly cloud forecasts — condensed into one report on this page.

Above Arcos de Valdevez, Viana do Castelo, Portugal tonight (41.85°, -8.42°), expect a new moon moon at 0% illumination. The night gives 6.5 hours of true astronomical darkness. At 41.8°, aurora needs a strong storm — roughly Kp 8.4 or higher — to reach Arcos de Valdevez, Viana do Castelo, Portugal.

Local sky character in Arcos de Valdevez

Northern mid-latitudes · northern hemisphere · 42 m elevation

The north celestial pole stands 41.8° above the horizon, so stars within 42° of it never set from here.
About 83.4% 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 19.2° up, staying low, so a clear southern horizon matters.
At 42 m elevation, roughly 0% of the atmosphere's mass is already below you, which measurably reduces extinction near the horizon.

Pole altitude

41.8°

Sky reachable

83.4%

Milky Way core

19.2° max

Aurora borealis

Kp 8.4+

Arcos de Valdevez is small enough that local light domes are limited — on a clear, moonless night the Milky Way is realistically within reach.

Best nights this month in Arcos de Valdevez

Calculated for these coordinates and today's date — not a fixed list.

2026-08-12 — 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 Arcos de Valdevez, Viana do Castelo, Portugal.
2026-08-12 — Perseids peak — up to 100/hour
Radiant in Perseus. Favours the Northern Hemisphere, which includes Arcos de Valdevez, Viana do Castelo, Portugal. The Moon is 2% lit on peak night, so lunar interference is none.
2026-08-27 — 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.

Arcos de Valdevez, Viana do Castelo, Portugal stargazing questions

What can I see in the sky tonight from Arcos de Valdevez, Viana do Castelo, Portugal?: Tonight from Arcos de Valdevez, Viana do Castelo, Portugal expect a new moon Moon at 0% illumination, with these naked-eye planets above the horizon after dark: Venus, Jupiter, Mercury, Saturn, Mars. The night offers about 6.5 hours of true astronomical darkness.
Is light pollution a problem in Arcos de Valdevez, Viana do Castelo, Portugal?: Arcos de Valdevez, Viana do Castelo, Portugal is small enough that the Milky Way can be visible on clear, moonless nights away from the immediate centre. This page's Moon and darkness figures tell you the other half of the story.
When can I see the Milky Way from Arcos de Valdevez, Viana do Castelo, Portugal?: The core reaches about 19.2° altitude, so target the moonless nights listed in the best-nights section and get away from the city core.
How dark does it actually get in Arcos de Valdevez, Viana do Castelo, Portugal tonight?: About 6.5 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 Arcos de Valdevez, Viana do Castelo, Portugal.

More in Viana do Castelo

Other sky reports in the same region.

Sky tonight across Portugal

Other cities in Portugal with live sky reports.

Popular astronomy destinations

Aurora hubs, dark-sky sites, and observatory towns.