Aurora Borealis in Sundsvall

Sweden · 62.39°, 17.31° · geomagnetic 61.0° · needs Kp 5

Tonight's aurora forecast for Sundsvall

52%

Peak chance of a visible display tonight, from the same model the Revon app runs. Sundsvall 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
52%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Sundsvall

Sundsvall is located at 61.0° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5.

On average, there are 19.4 nights per year suitable for aurora viewing in this region. The historical record spans from April 2, 2016, to March 30, 2026.

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

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

Sundsvall has a Bortle scale rating of 5, indicating moderate light pollution. Areas with lower Bortle ratings, such as Bortle 4 near Sättna District (20 km north-west) and Timrå District (12 km north-north-west), offer darker skies.

Notable features around Sundsvall include Killingholmen (a headland 3.3 km east), Alnön (an island 8.7 km east-north-east), Hjässberget (a hill 10.7 km west), Slädaviken (a bay 10.8 km east-north-east), and Degelberget (a hill 11.5 km west).

Features near Sundsvall that may offer varied viewing perspectives include Killingholmen, a headland located 3.3 km to the east. Alnön, an island situated 8.7 km east-north-east, is another nearby feature.

Further west, Hjässberget is a hill approximately 10.7 km away. Slädaviken, a bay, lies 10.8 km east-north-east, and Degelberget, a hill, is located 11.5 km west of Sundsvall.

Between January 1, 2015, and December 31, 2016, there were 63 verified aurora reports within a 300 km radius of Sundsvall.

The data indicates that nights with a Kp index of 5.0 or higher occurred on March 20, 21, 22, 23, and 24, 2026, according to historical records.

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 Sundsvall 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 Sundsvall.