Aurora Borealis in Rovaniemi

Finland · 66.50°, 25.72° · geomagnetic 63.6° · needs Kp 3

Tonight's aurora forecast for Rovaniemi

49%

Peak chance of a visible display tonight, from the same model the Revon app runs. Rovaniemi needs Kp 3 before anything clears the northern horizon, and tonight the forecast peaks at Kp 4.7 — comfortably over the line.

Tonight Tue 08 Sep
49%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Rovaniemi

Rovaniemi generally needs planetary Kp 3 before the aurora borealis reaches the local sky. Historical Kp and darkness data produce about 105.7 viable nights a year across 10.0 years of records.

The strongest historical overlap of darkness and activity occurs in March, October and February. From April through August, limited astronomical darkness can prevent viewing.

The central sky is approximately Bortle 6. The supplied darker-sky reference is 24 km east at Bortle 4.

Aurorasaurus recorded 202 verified reports within 300 km of Rovaniemi between 2015-01-01 and 2016-12-31. These records describe past observations, not tonight's prediction.

Sources: Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · Aurorasaurus verified positive reports

Know when it is worth going outside

Revon watches the Rovaniemi 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 Rovaniemi.