TonightAurora
Tonight · — · Copenhagen, Denmark

Aurora tonight in Copenhagen

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Crunching NOAA Kp, cloud cover, moon phase and darkness for Copenhagen…

connecting to NOAA SWPC + Open-Meteo…

Can you see the aurora borealis from Copenhagen?

Copenhagen is well outside the normal aurora zone, so a display here requires a genuinely strong geomagnetic storm — which is exactly why the sightings that do happen make the news.

Copenhagen needs Kp 5 — the same threshold as Edinburgh, which surprises people who assume Denmark is too far south. It is a low, flat country with a small land area and very little to block a northern view, so when a G1 storm arrives, the main obstacle is the city's own light rather than anything geographic.

Country
Denmark
Magnetic latitude
55.7°N
Geographic latitude
55.68°
Aurora threshold
Kp 5
Light pollution
Bortle 8
Deep-dark nights / yr
266
Sun at solar midnight
57.8° below horizon
Midnight sun
none

When to look: the Copenhagen aurora season

Work from **10 Aug** to **2 May**: that is the stretch in which Copenhagen gets a properly black sky, 266 nights in all. Outside those dates the sun never drops the full 18° below the horizon, so some twilight stays in the sky whatever the geomagnetic forecast says. The counter-season is just as clearly defined: from about **3 May** to **9 Aug** (99 nights) the sun never gets 18° below the horizon, so the sky never reaches full darkness, and between roughly 28 May and 14 Jul it does not get properly dark at all — no display, however strong, is visible in that stretch.

The nights here do get genuinely dark — the sun bottoms out 57.8° below the horizon in midwinter. But for roughly 3 May to 9 Aug it never gets that low, and the sky stays too bright for anything but the strongest displays. The season is therefore defined by dark nights, not by calendar dates.

Where to go in Copenhagen

The Øresund coast north of the city gives you water, a flat horizon and an easy escape from the light dome.

The aurora sits over the magnetic pole, so from Copenhagen you are looking toward magnetic north — which in practice means a spot with an open horizon in that direction and no streetlight in front of you. The "best window" in tonight's answer marks the first hour where cloud cover drops below roughly 40% while the sky is properly dark at this latitude.

What Kp do you need in Copenhagen?

Here is what each Kp value would actually put in Copenhagen's sky — the row that matters is the one at Kp 5, which is where this city's magnetic latitude of 55.7° places its threshold:

Kp indexWhat you'd see from Copenhagen
Kp 0Nothing from Copenhagen — the oval stays too far north. On those nights the forecast at the top of this page will say NO, and that is the honest answer.
Kp 1Not visible here. On these nights a trip north would be the only option. Nothing to plan around — save the trip for a stronger forecast.
Kp 2Nothing from Copenhagen — the oval stays too far north. Worth knowing so that a quiet night reads as expected rather than disappointing.
Kp 3Marginal: expect at most a dull arc low in the north, and only away from town. Give your eyes 20 minutes to adapt before deciding it is a no.
Kp 4Faint glow on the northern horizon, and only from genuinely dark ground outside the city. A camera will pull more colour out of this than your eyes will.
Kp 5This is the threshold night — a clear sky puts a pale green arc over the northern horizon, brighter during substorms. A clear sky is the deciding factor at this level.
Kp 6A good display: brighter arcs, rays climbing higher, curtains beginning to form overhead. This is the range where phone cameras start to work.
Kp 7A big night: the lights are overhead rather than on the horizon, moving quickly and showing strong colour. These are the nights people travel for.
Kp 8Once-a-cycle territory (G4–G5). Displays of this size have been seen overhead at latitudes like Copenhagen's. Rare enough that it is worth cancelling other plans for.
Kp 9Exceptional event (G4–G5). At this level the display can fill the whole sky above Copenhagen, not just the northern horizon. Watch the live forecast through the evening; this level can build quickly.

At Bortle class 8, Copenhagen's own light is the biggest single obstacle between the forecast and what you actually see. A Kp 5 night that shows beautifully from open country shows as nothing from a lit street. When the verdict above is GO or MAYBE, budget the drive out of town into the evening.

How tonight's answer is calculated for Copenhagen

Five inputs produce the answer at the top of this page, and every one of them is specific to Copenhagen: the NOAA Kp forecast against a threshold of Kp 5 (35% of the score), cloud cover through the night at 55.68°, 12.57° (25%), the moon (15%), astronomical darkness at this latitude (15%), and light pollution at Bortle 8 (10%). The method, its data sources and its known limitations are documented on our methodology page. No signup, no app, no account — the page computes everything in your browser from NOAA and Open-Meteo directly. Anonymous analytics and Google's advertising script are the only third parties involved, and both are set out on our privacy page.

Copenhagen aurora — quick answers

What Kp do you need to see the aurora in Copenhagen?

For Copenhagen the practical figure is Kp 5. Because it comes from magnetic latitude (55.7°), it does not vary with the season or the solar cycle — and it is the exact number the answer at the top of this page is checked against. Anything below it and the oval stays too far northern.

How accurate is tonight's aurora forecast for Copenhagen?

Five inputs, all recomputed every 15 minutes: the NOAA SWPC Kp forecast (accurate to about 12 hours), cloud cover for Copenhagen's coordinates from Open-Meteo, moon phase, this latitude's darkness window, and Bortle 8 light pollution. The engine is deliberately willing to say MAYBE or NO rather than overstate — including on the 99 nights a year when the sky here cannot get dark enough to see anything at all.

How dark does it actually get in Copenhagen?

On the darkest night of the year the sun reaches 57.8° below the horizon, and it clears 18° on 266 nights annually. Between roughly 3 May and 9 Aug it does not, so the sky never gets fully dark in that stretch.

Can you see the aurora from Copenhagen city centre?

Only when the display is strong. Bortle 8 means the city's own light is competing with the aurora, and at Kp 5 it usually wins from the centre. Give yourself 20–40 minutes of driving and the same night looks substantially better.

When is the best time to see the northern lights in Copenhagen?

Astronomical darkness runs from about 10 Aug to about 2 May. Between roughly 3 May and 9 Aug the sun never gets 18° below the horizon, so the sky never reaches full darkness — our engine returns NO during that stretch instead of pretending otherwise. Within any dark night, 21:00–01:00 local is the most active window.

Nearby & similar aurora cities

Dublin, Ireland

Tier 2 · needs Kp 6 · Bortle 7. Live answer for Dublin tonight.

Calgary, Canada

Tier 2 · needs Kp 6 · Bortle 7. Live answer for Calgary tonight.