Aurora Borealis in Imatra

Finland · 61.17°, 28.75° · geomagnetic 58.1° · needs Kp 5

Tonight's aurora forecast for Imatra

28%

Peak chance of a visible display tonight, from the same model the Revon app runs. Imatra 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
28%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Imatra

Imatra is at 58.1° geomagnetic latitude. Auroras are typically visible here when the Kp index reaches 5.

On average, there are 20.1 nights per year suitable for aurora viewing. The historical record spans from 2016 to 2026.

The best months for aurora viewing in Imatra are September, October, and March. These months offer a good balance of darkness and aurora activity.

However, full darkness is absent during May, June, July, and August, which may impact viewing opportunities during these summer months.

Imatra has a Bortle scale rating of 4, indicating a relatively dark sky. Dark sky areas, such as near Ruokolahti, are found 9 km to the north.

Local terrain features include hills like Aronmäki and Karhukallio, islands such as Lammassaari, beaches like Talviranta, and lakes like Mustalampi. These are located within a few kilometers of Imatra.

Geographic features near Imatra include the hill Aronmäki, located 3.6 km to the north-east, and Karhukallio hill, 4.0 km to the north.

Further afield, Lammassaari island is situated 4.7 km to the north-north-west, while Talviranta beach lies 4.7 km to the west-north-west.

Mustalampi lake is another feature, found 5.2 km to the north of Imatra.

There have been 39 verified aurora sightings reported within 300 km of Imatra between 2015 and 2016.

The historical record shows qualifying nights with Kp values of 5.0 or higher 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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Revon watches the Imatra 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 Imatra.