Aurora Borealis in Savonlinna

Finland · 61.87°, 28.88° · geomagnetic 58.7° · needs Kp 5

Tonight's aurora forecast for Savonlinna

39%

Peak chance of a visible display tonight, from the same model the Revon app runs. Savonlinna needs Kp 5 to see anything at all, and tonight the forecast peaks at Kp 4.7. 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 10:35 UTC

Local aurora guide for Savonlinna

Savonlinna is located at 58.7° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5.

On average, there are 19.8 nights per year in Savonlinna where auroral activity is expected to be visible.

The historical record for aurora observations in this region spans from April 2, 2016, to March 30, 2026.

The months of September, March, and October offer the best opportunities for viewing auroras in Savonlinna.

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

Savonlinna has a Bortle scale rating of 5, indicating a suburban sky brightness.

Areas with darker skies, rated Bortle 3, can be found approximately 16 km north-northeast of Savonlinna.

Further dark sky locations, rated Bortle 5, are situated about 15 km south-southeast of Savonlinna. Notable terrain features include the hill of Repovuori to the east, the headland of Kirkkoniemi to the west, the island of Suuri Suottasaari to the north, the ridge of Päiväharju to the east-northeast, and the island of Paskosaari to the northwest.

Geographic features near Savonlinna include Repovuori, a hill located 3.0 km east. Kirkkoniemi, a headland, is situated 3.0 km west.

To the north, the island of Suuri Suottasaari is 3.1 km away. Päiväharju, a ridge, lies 3.1 km east-northeast.

Paskosaari, an island, is located 3.5 km northwest of Savonlinna.

There are 159 verified aurora reports within 300 km of Savonlinna, recorded between January 1, 2015, and December 31, 2016.

The region experiences approximately 19.8 nights per year with potentially visible auroral activity.

Specific qualifying nights with Kp 5.0 or higher occurred on March 20, 21, 22, 23, and 24, 2026.

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

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Nearby towns

Forecasts for places within reach of Savonlinna.