Aurora Borealis in Viikki
Finland · 60.22°, 25.02° · geomagnetic 57.7° · needs Kp 7
Tonight's aurora forecast for Viikki
26%
Peak chance of a visible display tonight, from the same model the Revon app runs. Viikki needs Kp 7 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.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:35 UTC
Local aurora guide for Viikki
Viikki is located at 57.7° geomagnetic latitude. Auroras are typically visible at this latitude when the Kp index reaches 7.
On average, there are about 2.3 nights per year suitable for aurora viewing in Viikki. The historical record spans from April 2, 2016, to March 30, 2026.
The best months for aurora viewing in Viikki are September, November, and March. These months offer a good balance of darkness and potential aurora activity.
However, Viikki experiences no full darkness from May through August. During these months, the extended daylight may obscure aurora visibility.
Viikki has a Bortle scale rating of 8, indicating significant light pollution. This level of artificial light can make faint auroras difficult to observe.
Darker skies, rated Bortle 4 and 5, can be found approximately 47 km east-south-east near Porvoo and 36 km south-east near Porvoo, respectively.
The local horizon is marked by several features, including the hills of Spikberget and Råbacka to the east-north-east, the Heureka observatory to the north, the Pilslätt park to the west-north-west, and the island of Kråkholmen to the east.
In the vicinity of Viikki, several geographical features offer varied horizons. Spikberget and Råbacka are hills located to the east-north-east.
To the north, the Heureka observatory is situated. West-north-west of Viikki lies Pilslätt park.
Kråkholmen, an island, is located to the east.
Historical data shows 40 verified aurora reports within 300 km of Viikki between January 1, 2015, and December 31, 2016.
The period from 2016 to 2026 includes several nights with significant geomagnetic activity. Notable dates include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), January 19, 2026 (Kp 8.67), November 12, 2025 (Kp 7.33), and November 11, 2025 (Kp 8.67).
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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Forecasts for places within reach of Viikki.