Aurora Borealis in Arendal

Norway · 58.46°, 8.77° · geomagnetic 58.6° · needs Kp 5

Tonight's aurora forecast for Arendal

49%

Peak chance of a visible display tonight, from the same model the Revon app runs. Arendal needs Kp 5 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
49%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Arendal

Arendal is located at 58.6° geomagnetic latitude. Auroras are typically visible here when the planetary Kp index reaches 5.

Over the course of a year, there are approximately 21.7 nights where conditions are favorable for aurora viewing. These opportunities are spread across the period from April 2, 2016, to March 30, 2026.

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

From May through August, Arendal experiences periods without full darkness, which can make aurora viewing more challenging.

Arendal has a Bortle scale rating of 6, indicating moderate light pollution. Areas with a Bortle rating of 4, offering darker skies, can be found approximately 14 km east-north-east of the city.

Several elevated or coastal locations offer varied horizons. These include Ekevalen, a hill 3.0 km east-north-east, and Botteråsen, a hill 3.1 km north-west. Other points like Brunes and Taraldsnes are headlands located east-north-east of Arendal.

Geographic features near Arendal include Ekevalen, a hill situated 3.0 km east-north-east, and Botteråsen, a hill 3.1 km north-west. These offer varied perspectives.

Additional terrain includes the headlands of Brunes and Taraldsnes, both located east-north-east of Arendal, and the moorland of Saulemoen, also east-north-east.

Historical data shows 25 verified aurora reports within a 300 km radius of Arendal between January 1, 2015, and December 31, 2016.

The period between April 2, 2016, and March 30, 2026, includes several nights with favorable Kp values. Notable qualifying nights include March 20, 2026 (Kp 7.0), March 21, 2026 (Kp 6.0), March 22, 2026 (Kp 6.67), March 23, 2026 (Kp 5.0), and March 24, 2026 (Kp 5.0).

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

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Nearby towns

Forecasts for places within reach of Arendal.