Aurora Borealis in Vuosaari
Finland · 60.21°, 25.14° · geomagnetic 57.7° · needs Kp 7
Tonight's aurora forecast for Vuosaari
26%
Peak chance of a visible display tonight, from the same model the Revon app runs. Vuosaari 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 Vuosaari
Vuosaari is located at 57.7° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 7 or higher.
Based on historical data from 2016 to 2026, there are approximately 2.3 nights per year with conditions suitable for aurora viewing.
The best months for aurora viewing in Vuosaari are September, November, and March. During these months, the nights are long enough for potential aurora displays.
However, from May through August, there is not enough full darkness for aurora viewing due to the high latitude.
Vuosaari experiences a Bortle 7 light pollution level. Areas with less light pollution, such as Bortle 4 skies near Porvoo, offer better viewing conditions.
The horizon in Vuosaari is relatively open, with nearby features including Kråkholmen island to the northeast and Spikberget hill to the northwest.
Nearby geographical features that may offer viewing opportunities include Kråkholmen, an island located 3.1 km north-east of Vuosaari.
Spikberget, a hill situated 3.2 km north-north-west of Vuosaari, and Kalkkisaari, an island 3.3 km east-north-east, are also in the vicinity.
Further afield, Kantarnäsberget hill is 3.3 km north-east, and Kalkkisaarenselkä bay is 3.7 km east of Vuosaari.
Historical records show approximately 2.3 viable aurora nights per year in Vuosaari between 2016 and 2026.
Verified reports indicate 40 sightings within 300 km between 2015 and 2016.
Notable qualifying nights in the historical record include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (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
Know when it is worth going outside
Revon watches the Vuosaari forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of Vuosaari.