Aurora Borealis in Fredrikstad

Norway · 59.22°, 10.93° · geomagnetic 59.0° · needs Kp 5

Tonight's aurora forecast for Fredrikstad

51%

Peak chance of a visible display tonight, from the same model the Revon app runs. Fredrikstad needs Kp 5 to see anything at all, and tonight the forecast peaks at Kp 4.8. Short of the threshold, which is what most nights look like here.

Tonight Tue 08 Sep
51%
18
20
22
00
02
04
06

Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Fredrikstad

Fredrikstad is located at 59.0° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5.

Based on historical data from 2016 to 2026, there are approximately 21.5 nights per year in Fredrikstad where conditions might be suitable for aurora viewing.

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

From May through August, Fredrikstad experiences periods without full darkness, which can make aurora viewing more challenging.

Fredrikstad has a Bortle scale rating of 6, indicating significant light pollution. However, areas with darker skies, such as Bortle 4 skies near Halden (33 km east) and Bortle 5 skies near Sarpsborg (19 km east), are within reach.

Several elevated points and coastal features offer varied horizons around Fredrikstad. These include Korpeknotten (hill, 3.0 km NNE), Kirkefjellet (hill, 3.2 km NE), and Renudtangen (headland, 7.1 km NE). To the west, Gjallarnes (headland, 8.9 km W) and Elingårdskilen (fjord, 9.4 km W) also provide distinct viewing perspectives.

Korpeknotten, a hill located 3.0 km north-north-west of Fredrikstad, offers a potential vantage point.

Kirkefjellet, situated 3.2 km north-east of Fredrikstad, is another elevated area.

Renudtangen, a headland 7.1 km north-east of Fredrikstad, provides a different perspective. Further west, Gjallarnes (headland, 8.9 km W) and the area around Elingårdskilen (fjord, 9.4 km W) are also noted.

Between 2015 and 2016, 20 verified aurora reports were recorded within a 300 km radius of Fredrikstad.

The historical data indicates that nights with Kp values of 5.0 or higher occurred on March 20, 21, 22, 23, and 24, 2026, within the analyzed period.

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 Fredrikstad forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.

Get aurora alerts on iPhone

Nearby towns

Forecasts for places within reach of Fredrikstad.