Aurora Borealis in Holbæk
Denmark · 55.72°, 11.71° · geomagnetic 55.5° · needs Kp 7
Tonight's aurora forecast for Holbæk
6%
Peak chance of a visible display tonight, from the same model the Revon app runs. Holbæk 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.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:35 UTC
Local aurora guide for Holbæk
Holbæk is located at 55.5° geomagnetic latitude. Auroras visible here typically require a Kp of 7 or higher.
On average, there are about 2.5 nights per year with conditions suitable for aurora viewing.
Records of aurora activity in this region span from April 2, 2016, to March 30, 2026.
The best months for aurora viewing in Holbæk are September, November, and August.
During May, June, and July, there is no full darkness, which can impact viewing conditions.
The area around Holbæk has a Bortle rating of 4, indicating a relatively dark sky.
Areas with Bortle 4 conditions are found 4 km north-north-east near Holbæk Municipality.
The horizon is characterized by features such as Bavnehøj (hill, 4.0 km north-west), Udby Vig (bay, 5.5 km north-north-east), Langø (island, 6.4 km east-north-east), Inderbredning (bay, 6.6 km east), and Bøgebjerg (hill, 6.6 km north-west).
Geographic features near Holbæk include Bavnehøj, a hill located 4.0 km north-west.
Udby Vig, a bay situated 5.5 km north-north-east, and Langø, an island 6.4 km east-north-east, are also nearby.
Further points of interest include Inderbredning, a bay 6.6 km east, and Bøgebjerg, a hill 6.6 km north-west of Holbæk.
There have been 6 verified aurora reports within 300 km of Holbæk between January 1, 2015, and December 31, 2016.
Historically, qualifying nights for aurora viewing in this region include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (Kp 8.67).
Additional qualifying nights occurred on November 12, 2025 (Kp 7.33) and November 11, 2025 (Kp 8.67).
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 Holbæk forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of Holbæk.