Aurora Borealis in Västervik

Sweden · 57.76°, 16.64° · geomagnetic 56.7° · needs Kp 7

Tonight's aurora forecast for Västervik

16%

Peak chance of a visible display tonight, from the same model the Revon app runs. Västervik 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 10:36 UTC

Local aurora guide for Västervik

Västervik is located at 56.7° geomagnetic latitude. Auroras visible at this latitude typically require a Kp of 7.

On average, there are 2.4 nights per year suitable for aurora viewing in Västervik. These opportunities are spread across the period from April 2, 2016, to March 30, 2026.

The best months for aurora viewing in Västervik are September, November, and March. These months offer the longest periods of darkness.

During May, June, and July, Västervik experiences periods without full darkness, which can impact aurora visibility.

Västervik has a Bortle rating of 2, indicating very dark skies. Areas 7 km east near Västerviks kommun also maintain a Bortle 2 rating.

The horizon to the north-north-west is characterized by Finland, an island, 3.6 km away. To the north-east, the island of Torrö is 3.7 km away.

Further horizons include the lake Gagnarn 6.9 km to the north-west, the lake Hjorten 8.6 km to the west-north-west, and the bay Hasselöfjärden 9.6 km to the north-east.

North-north-west of Västervik, the horizon includes Finland, an island located 3.6 km away.

To the north-east, the island of Torrö is situated 3.7 km from Västervik.

Inland, the lake Gagnarn lies 6.9 km to the north-west, and the lake Hjorten is 8.6 km to the west-north-west. The bay Hasselöfjärden is 9.6 km to the north-east.

There have been 28 verified aurora reports within 300 km of Västervik between January 1, 2015, and December 31, 2016.

Historically, qualifying nights for aurora viewing in Västervik 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 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

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Nearby towns

Forecasts for places within reach of Västervik.