Aurora Borealis in Trondheim

Norway · 63.43°, 10.40° · geomagnetic 63.0° · needs Kp 3

Tonight's aurora forecast for Trondheim

53%

Peak chance of a visible display tonight, from the same model the Revon app runs. Trondheim needs Kp 3 before anything clears the northern horizon, and tonight the forecast peaks at Kp 4.8 — comfortably over the line.

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 Trondheim

Trondheim is located at 63.0° geomagnetic latitude. Auroras are often visible at this latitude when the Kp index reaches 3.

Over the period from 2016 to 2026, there were an average of 115.6 nights per year with conditions suitable for aurora viewing.

The best months for aurora viewing in Trondheim are March, September, and October. During these months, the nights are dark enough to potentially see the aurora.

From April through August, Trondheim experiences periods without full darkness, which can make aurora viewing difficult.

Trondheim has a Bortle scale rating of 6, indicating moderate light pollution. Areas with lower Bortle ratings offer darker skies.

Darker skies, rated Bortle 4, can be found 21 km west-north-west near Indre Fosen. Bortle 5 skies are available 11 km north-west near Indre Fosen.

Local terrain features such as Tåa (hill, 3.0 km west-north-west), Våttakammen (peak, 3.1 km west-north-west), Kollen (hill, 3.1 km west), and Høvringen (headland, 3.3 km west-north-west) offer varied horizons.

Areas near Trondheim with varied horizons include Tåa, a hill located 3.0 km west-north-west, and Våttakammen, a peak 3.1 km west-north-west.

Other notable terrain features include Kollen, a hill 3.1 km west, and Høvringen, a headland 3.3 km west-north-west.

Ringve botaniske hage, a park situated 3.4 km east-north-east, also offers a local viewpoint.

Between 2016 and 2026, there were an average of 115.6 nights per year suitable for aurora viewing in the Trondheim region.

Records show qualifying nights occurred on March 30, 2026 (Kp 3.0), March 29, 2026 (Kp 3.33), March 28, 2026 (Kp 3.67), March 27, 2026 (Kp 3.33), and March 26, 2026 (Kp 3.0).

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

Know when it is worth going outside

Revon watches the Trondheim 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 Trondheim.