Aurora Borealis in Nurmijärvi
Finland · 60.46°, 24.81° · geomagnetic 58.0° · needs Kp 5
Tonight's aurora forecast for Nurmijärvi
30%
Peak chance of a visible display tonight, from the same model the Revon app runs. Nurmijärvi 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.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:35 UTC
Local aurora guide for Nurmijärvi
Nurmijärvi is at a geomagnetic latitude of 58.0 degrees. Auroras are typically visible when the planetary Kp index reaches 5.
On average, there are about 20.6 nights per year suitable for aurora viewing in this region. Sightings have been recorded between April 2, 2016, and March 30, 2026.
The best months for aurora viewing in Nurmijärvi are September, October, and March. These months offer a good balance of darkness and clear skies.
During May, June, July, and August, there is not enough full darkness for optimal aurora observation.
Nurmijärvi experiences a Bortle 8 level of light pollution. Darker skies, rated Bortle 4, can be found about 73 km away near Porvoo.
A Bortle 5 sky is available approximately 31 km west of Nurmijärvi, near Vihti.
Local terrain features include hills like Keikkumäki and Tanssikallio, and lakes such as Vaaksinjärvi and Haukilampi, which may affect viewing angles.
In the vicinity of Nurmijärvi, Keikkumäki and Tanssikallio are hills located to the north-northeast and north-northwest, respectively.
Isosaari is an island situated to the west-northwest, while Vaaksinjärvi and Haukilampi are lakes in the same general direction.
There have been 40 verified aurora reports within 300 km of Nurmijärvi between January 1, 2015, and December 31, 2016.
Notable recent qualifying nights, based on Kp index, include March 20-24, 2026, with Kp values ranging from 5.0 to 7.0.
Sources: Revon analysis of NOAA planetary Kp · Revon location dataset · 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 Nurmijärvi.