Aurora Borealis in Hørsholm

Denmark · 55.88°, 12.50° · geomagnetic 55.5° · needs Kp 7

Tonight's aurora forecast for Hørsholm

6%

Peak chance of a visible display tonight, from the same model the Revon app runs. Hørsholm needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.8. Short of the threshold, which is what most nights look like here.

Tonight Tue 08 Sep
6%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Hørsholm

The aurora forecast uses a Kp 7 threshold for Hørsholm, Denmark. This location is at 55.5° geomagnetic latitude.

On average, there are about 2.5 nights per year with conditions suitable for aurora viewing. The historical record spans from April 2, 2016, to March 30, 2026.

The best months for aurora viewing in Hørsholm, Denmark, are September, November, and August. These months offer a good balance of darkness and potential aurora activity.

However, May, June, and July experience periods without full darkness, which can impact viewing opportunities during these months.

Hørsholm, Denmark, has a Bortle 7 rating for light pollution. This indicates a suburban sky with some light interference.

Darker skies, rated Bortle 4, can be found approximately 34 km west-north-west near Halsnæs Municipality. Bortle 5 skies are about 20 km north-west near Gribskov Municipality.

The local horizon features include Nivå Bugt (bay) to the north-east, Nivå Strand (beach) to the north-north-east, and Store-Klint (cliff) to the north-north-east.

The area around Hørsholm, Denmark, offers varied horizons. To the east-north-east, you can find Ven Lighthouse and the island of Ven.

Closer to the north-east, Nivå Bugt (bay) and Nivå Strand (beach) are present, with Store-Klint (cliff) also to the north-north-east.

There are 6 verified aurora sightings reported within 300 km of Hørsholm, Denmark, between January 1, 2015, and December 31, 2016.

Historically qualifying nights, based on Kp index, include November 11, 2025 (Kp 8.67), November 12, 2025 (Kp 7.33), January 19, 2026 (Kp 8.67), January 20, 2026 (Kp 7.67), and March 20, 2026 (Kp 7.0).

Sources: Revon location dataset · Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports

Know when it is worth going outside

Revon watches the Hørsholm forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.

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Nearby towns

Forecasts for places within reach of Hørsholm.