Aurora Borealis in Kajaani

Finland · 64.23°, 27.73° · geomagnetic 61.1° · needs Kp 5

Tonight's aurora forecast for Kajaani

22%

Peak chance of a visible display tonight, from the same model the Revon app runs. Kajaani needs Kp 5 to see anything at all, and tonight the forecast peaks at Kp 3.3. Short of the threshold, which is what most nights look like here.

Tonight Sun 09 Aug
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Get the full 30-night forecast in Revon

Updated 2026-08-09 18:23 UTC

Local aurora guide for Kajaani

Kajaani is located at 61.1° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5 or higher.

On average, there are 18.4 nights per year suitable for aurora viewing in this region. The historical record spans from April 2, 2016, to March 30, 2026.

The best months for aurora viewing in Kajaani are September, March, and October. During these months, the nights are dark enough to potentially see the aurora.

However, from April through August, Kajaani experiences periods without full darkness, which can significantly reduce viewing opportunities.

Kajaani has a Bortle scale rating of 6, indicating moderate light pollution. Areas with less light pollution can offer better viewing experiences.

For example, Bortle 3 conditions can be found 23 km west of Kajaani, and Bortle 5 conditions are available 11 km west-north-west.

The local terrain includes hills and ridges such as Heinimäki, Iso Aittaharju, and Kirkkokallio, which may affect the horizon view.

Geographic features near Kajaani include the hill Heinimäki, located 3.2 km east-north-east, and the ridge Iso Aittaharju, 3.5 km north-north-east.

Other notable locations include the headland Ammeniemi, 3.7 km east, and Ristonniemi, a headland 4.1 km west-north-west.

Kirkkokallio, a hill situated 4.5 km west of Kajaani, also offers terrain features that could influence viewing.

Historical data shows 149 verified aurora reports within a 300 km radius of Kajaani between January 1, 2015, and December 31, 2016.

The region has experienced nights with Kp values of 5.0 or higher on multiple occasions, including March 24, 2026 (Kp 5.0), March 23, 2026 (Kp 5.0), March 22, 2026 (Kp 6.67), March 21, 2026 (Kp 6.0), and March 20, 2026 (Kp 7.0).

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 Kajaani 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 Kajaani.