Northern lights Finnsnes tonight
Finnsnes sits at 69°N magnetic latitude inside the auroral oval, 80 km south of Tromsø. Kp 1–2 is enough for aurora on a clear night. The town is the mainland gateway to Senja island - the Senja bridge is 20 km away. The Gisund strait gives north-facing dark water within minutes of the centre, and the surrounding area is significantly less crowded than Tromsø. Polar night: approximately 28 November to 14 January.
Aurora visibility - Finnsnes
Possible tonight
Kp 1 is at the threshold for Finnsnes. Aurora may be visible from a dark site if cloud cover permits.
Current Kp
1
of 9
7-day outlook for Finnsnes
Today
21 May
Tomorrow
22 May
Sat
23 May
Sun
24 May
Mon
25 May
Tue
26 May
Wed
27 May
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
What Kp is needed here?
Finnsnes sits at a magnetic latitude of approximately 69°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 1–2 before the auroral oval expands far enough south to be visible from here.
At Kp 1–2, visibility is possible from Finnsnes but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.
Best dark sky sites near Finnsnes
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Gisund strait viewpoints
Get directions ↗The Gisund strait runs between the mainland and Senja island, with Finnsnes positioned at its northern end. Several pull-ins along the E6 north of town and the minor roads toward the Senja bridge give north-facing views across the dark water. The Senja mountain silhouette is visible to the southwest; the open strait extends north toward Senjahopen bay. Finnsnes town lights drop off within 2 km in the northern direction. On calm nights the strait surface mirrors any active aurora; the 3 km width gives a substantial reflection band. Bortle Class 2 from the water's edge.
Senja island - Tungeneset headland
Get directions ↗Tungeneset is a rocky headland on Senja's west coast, 55 minutes from Finnsnes via the island bridge and coastal road. The headland faces northwest with the jagged Segla mountain peak (639 m) rising directly behind. No artificial light reaches the horizon from any direction. Bortle Class 2 throughout. The small car park fills quickly when activity is forecast - arrive before dark to secure a position and check footing on the rocks. Most of the coastal road from the bridge to Tungeneset is dark enough that any pull-in is worth considering if the main viewpoint is crowded.
Lavangen fjord
Get directions ↗Lavangen is a narrow fjord running southwest from the Gratangen waterway, accessible from Finnsnes via Route 84. The fjord is enclosed by steep hillsides with no settlement beyond the small village at its head. South shore pull-ins give north-facing views down the fjord toward Gratangen and the main waterway. Bortle Class 2 from the inner fjord. The valley's inland position means it sometimes holds clearer sky when coastal cloud sits over the Gisund strait. The drive from Finnsnes takes 30 minutes on a paved road; it is a practical fallback when the strait viewpoints are overcast.
Best time to see the northern lights in Finnsnes
At 69°N magnetic latitude, Finnsnes has one of the longest aurora seasons in the world. Meaningful darkness returns in late August and displays are possible on almost any clear night from September through March. Only the endless daylight of May, June, and July rules out viewing completely.
Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Finnsnes's latitude.
May through July is effectively impossible for aurora viewing: the midnight sun keeps the sky bright around the clock at this latitude. No storm level, not even G5, can produce a visible display without astronomical darkness.
Related pages
Northern Lights Norway
Norway-wide aurora forecast hub.
Northern Lights Senja Tonight
Senja Island - Tungeneset, Husøy, and Bergsbotn, 20 km from Finnsnes.
Northern Lights Tromsø Tonight
Tromsø - 80 km north, the world's best-serviced aurora destination.
Northern Lights Narvik Tonight
Narvik - 150 km south, Ofoten fjord and railway viewpoints.
What Is the Kp Index?
Why Kp 1-2 is enough at 69°N magnetic latitude.
Common questions
Aurora at Finnsnes - Senja island access, Kp threshold, and how it compares to Tromsø.