Aurora Borealis in Horsens

Denmark · 55.86°, 9.85° · geomagnetic 55.9° · needs Kp 7

Tonight's aurora forecast for Horsens

10%

Peak chance of a visible display tonight, from the same model the Revon app runs. Horsens 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
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Horsens

Horsens is at a geomagnetic latitude of 55.9°.

Auroras are typically visible at this latitude during intense geomagnetic storms, rated Kp 7 or higher.

Based on historical data, there are approximately 2.5 nights per year suitable for aurora viewing.

The best months for aurora viewing in Horsens are September, November, and August.

During May, June, and July, there is insufficient darkness for aurora observation.

Horsens experiences a Bortle 7 sky, indicating significant light pollution.

Areas with darker skies, such as near Hedensted Municipality, offer Bortle 4 conditions.

The surrounding terrain includes bays like Nørrestrand, islands such as Vorsø and Vorsø Kalv, and hills like Bavnehøj and Brokbjerg.

Geographic features near Horsens include Nørrestrand, a bay located 3.1 km north-east.

To the east are the islands Vorsø Kalv (8.7 km) and Vorsø (9.6 km).

Inland, Bavnehøj hill is 8.9 km west-north-west, and Brokbjerg hill is 11.3 km north-north-west.

Records from 2016-04-02 to 2026-03-30 show an average of 2.5 viable aurora nights per year.

Verified reports indicate 6 sightings within 300 km between 2015 and 2016.

Notable qualifying nights include 2026-03-20 (Kp 7.0), 2026-01-20 (Kp 7.67), 2026-01-19 (Kp 8.67), 2025-11-12 (Kp 7.33), and 2025-11-11 (Kp 8.67).

Sources: 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 Horsens 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 Horsens.