All locations Norway Finnsnes

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

Threshold for Finnsnes: Kp 1–2 Magnetic latitude: ~69°N Updated: 21 May, 14:34 UTC
↓ Bz nT Solar wind km/s Density p/cm³
Conditions right now: Kp + Bz + solar wind + cloud + moon

7-day outlook for Finnsnes

Today

21 May

Quiet

Tomorrow

22 May

Quiet

Sat

23 May

Quiet

Sun

24 May

Quiet

Mon

25 May

Quiet

Tue

26 May

Quiet

Wed

27 May

Quiet

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

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Bortle Class 2 - Excellent dark sky Near Finnsnes - approximately 5 minute drive

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

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Bortle Class 2 - Excellent dark sky 50 km from Finnsnes - approximately 55 minute drive via bridge

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

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Bortle Class 2 - Excellent dark sky 30 km from Finnsnes - approximately 30 minute drive via Route 84

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.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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.

Common questions

Aurora at Finnsnes - Senja island access, Kp threshold, and how it compares to Tromsø.

Why is Finnsnes a good alternative to Tromsø for aurora?
Finnsnes sits at 69°N magnetic latitude inside the auroral oval - the same band as Tromsø - with a Kp 1-2 threshold. It is a working town of around 5,000 people, not an aurora tourism hub, which means accommodation costs less, dark sky positions are rarely crowded, and the experience is less managed. The Gisund strait gives dark north-facing water within minutes of any hotel, and the Senja bridge is 20 minutes away. For the same geomagnetic conditions, Finnsnes delivers the same aurora probability as Tromsø at a fraction of the cost and without the competition for viewpoints.
Is Finnsnes a good base for Senja island?
Yes. Finnsnes is the mainland gateway to Senja - the bridge connecting the island is 20 km from the town centre. Tungeneset, Husøy, and Bergsbotn, Senja's three main photography positions, are all within an hour of Finnsnes by car. Staying in Finnsnes rather than Senja itself means more accommodation choice and lower prices, with the option to drive onto the island when the forecast is active. The coastal road from the bridge to Tungeneset takes around 55 minutes.
What Kp is needed for aurora in Finnsnes?
At 69°N magnetic latitude, 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 for reliable aurora visibility. On the quietest nights (Kp 1), a faint arc is often present on the northern horizon from the Gisund strait viewpoints. Kp 2 produces clear structural activity visible from the town outskirts. The north-facing strait gives a broader and darker sky than most mainland positions at this latitude.
How much cheaper is Finnsnes than Tromsø?
Accommodation in Finnsnes typically costs 30–50% less than equivalent options in Tromsø during aurora season. Hire car rates are similar from both locations, though picking up in Finnsnes rather than Tromsø airport avoids paying for the driving time. There are no tour operators based in Finnsnes offering cloud-chasing services - if you want a guided tour that chases clear sky by vehicle, Tromsø is the better base. If you are willing to plan your own movements using cloud cover forecasts, Finnsnes gives the same aurora access for less money.
How far is Finnsnes from Tromsø?
Finnsnes is approximately 80 km south of Tromsø by road, following the E8 and then Route 86 south - around 1 hour 15 minutes of driving in normal conditions. There is a regular Widerøe turboprop flight connecting Finnsnes Airport (FIN) to Tromsø in around 20 minutes, with several departures daily. The road route passes through attractive coastline and is straightforward in good conditions; winter tyres are required from November to April on the mountain sections.

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