Aurora Borealis in Rauma

Finland · 61.13°, 21.51° · geomagnetic 59.1° · needs Kp 5

Tonight's aurora forecast for Rauma

49%

Peak chance of a visible display tonight, from the same model the Revon app runs. Rauma 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.

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 Rauma

Rauma is located at 59.1° geomagnetic latitude. Auroras are typically visible at this latitude when the Kp index reaches 5.

Historically, Rauma has averaged 20.1 viable aurora nights per year between 2016 and 2026.

The best months for aurora viewing in Rauma are September, March, and October. During these months, there is sufficient darkness for aurora observation.

From May through August, Rauma experiences periods without full darkness, which can impact viewing opportunities.

Rauma experiences a Bortle 7 light pollution level. However, areas with Bortle 4 conditions can be found 20 km to the north-west, near Rauma.

Further afield, Bortle 5 conditions are available 19 km to the south-east, near Laitila.

Local terrain features include the hill Isovuori 3.0 km east of Rauma, and the island Petäjäs 3.2 km west-north-west of Rauma.

Geographic features near Rauma include Isovuori, a hill located 3.0 km to the east. Petäjäs, an island, is situated 3.2 km to the west-north-west.

Other nearby locations include the island Korkeakari, 3.4 km west-north-west, and the hill Röyskänmäki, 3.5 km to the north.

The lake Pyytjärvi is also located 3.5 km north-north-west of Rauma.

Between 2016 and 2026, Rauma has recorded an average of 20.1 nights per year suitable for aurora viewing.

Verified reports show 59 sightings within 300 km of Rauma between January 1, 2015, and December 31, 2016.

Notable qualifying nights in the recent record span 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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Nearby towns

Forecasts for places within reach of Rauma.