Nordic Explorer

Can you see the northern lights in Alta tonight?

Clouded out — 77% cloud at best between 19:54 and 04:34.

Checked against NOAA SWPC, FMI's Masi magnetometer and the MET Norway Locationforecast.

Tonight Alta is 7 of 13 on the ranked table of places.

Alta is in Norway at 70.0°N, where a quiet geomagnetic night is often enough to see the aurora and the sun does not rise for some weeks around the winter solstice.

A green band of northern lights across a deep blue night sky over Lillevannet lake in Alta, reflected in the still water, with dark pine trees on the left shore and a low hill on the right.

Photo: Ahnjo, CC BY 3.0

The evidence

Geomagnetic activity
Kp 0.00 (quiet) NOAA SWPC, estimated Kp, 4 minutes ago
Forecast peak Kp 4.33 during the dark hours NOAA SWPC 3-day forecast, issued 02:30 CEST
2% chance of aurora overhead NOAA SWPC OVATION, 14 minutes ago
Local disturbance 1 nT/min at Masi, 59 km away FMI magnetometer network, 46 minutes ago
Cloud over the dark hours
77% cloud at best around 23:00, 99% at worst MET Norway Locationforecast, covering 19:54–04:34
Darkness
Astronomical dark 19:54–04:34 (8h 40m) computed here from the date and the coordinates
Sunset 16:25, sunrise 08:00 computed here
Moon
First quarter, 60% lit, below the horizon at the start of the dark hours computed here

Cloud forecast: MET Norway, under CC BY 4.0, reduced here to the clearest and cloudiest hour of the dark window. See where the data comes from.

How dark does it get in Alta tonight?

It is astronomically dark — dark enough to see the aurora — from 19:54 to 04:34 local time, 8 hours and 40 minutes.

Dark hours by date, 2026–27 season

DateDark fromDark untilHours of darkness
15 September Not dark enough for the aurora
1 October 21:2803:085h 40m
15 October 20:1204:188h 06m
1 November 18:0204:2210h 20m
15 November 17:2005:0811h 48m
1 December 16:4805:4813h 00m
15 December 16:3806:1013h 32m
1 January 16:5006:1413h 24m
15 January 17:1605:5812h 42m
1 February 18:0605:1611h 10m
15 February 18:5404:289h 34m
1 March 19:5403:247h 30m
15 March 21:1202:004h 48m
1 April Not dark enough for the aurora

Astronomical darkness (the sun more than 18° below the horizon), Alta local time, computed here from the date and the coordinates.

Visit Alta states that the northern lights season runs from September to the end of March, with chances to see the aurora when conditions are right. Depending on the weather and aurora conditions, a tour may head to the coast or up onto the Finnmark plateau. Alta has flights to and from Oslo Airport Gardermoen and Tromsø Airport, and bus services connect the town across the region.

When to see the northern lights in Alta

Visit Alta says September marks the beginning of the northern lights season in Alta, and that from September to the end of March there are chances to see the aurora when conditions are right. Visit Alta also states that in some years the northern lights can already be seen at the end of August. According to Visit Alta, the town has two months of polar night, and locals stay active through it.

Visit Alta describes the local climate as having no distinct coastal climate, but rather a mix of coastal and inland climate. Visit Alta reports that winters are cold but often stable, with temperatures that can range from a few degrees below zero to well below -20 °C.

Visit Alta states that the world's first permanent northern lights observatory was built on Mount Halde in Alta by Kristian Birkeland in 1899, and that the research moved to Tromsø in 1926. Visit Alta notes that the observatory was built at Halde because Alta is one of the best places to study the northern lights. Today, the old observatory building is an unstaffed DNT cabin, reached on a hike that Visit Alta describes as relatively steep in some areas, taking about 6 hours from Kåfjord during summer and autumn. Visit Alta also records that the Northern Lights Cathedral, known as Alta Church, was consecrated in 2013, and that its waving lines were inspired by the northern lights. For comparisons across northern Scandinavia, see our guide to the best places to see the northern lights and our live aurora verdicts.

How to get to Alta

Visit Alta states that Alta is the largest and most populous town in Finnmark, Norway's northernmost county. Alta Airport is 5 kilometres from the city centre. Alta has flights to and from Oslo Airport Gardermoen and Tromsø Airport, with Oslo to Alta taking 2 hours and Tromsø to Alta taking 30 minutes.

The airport bus is run by Snelandia and takes about 10 minutes to the centre. Alta Taxi has a stop outside the arrivals hall.

The E6 and E45 roads meet in Alta. The E6 runs south to Trondheim and Oslo, and the E45 goes to Kautokeino and further into Finland and Sweden. Visit Alta states that travel time from Tromsø to Alta is 6 hours, and from Rovaniemi to Alta is 6 hours. A bus runs from Tromsø to Alta through North Troms on the E6, and there are buses from Karasjok, Kautokeino and Honningsvåg.

Where to stand to see the aurora

Visit Alta states that experienced aurora hunters in Alta head either to the Arctic coast or south to the open Finnmark plateau to improve their chances. Visit Alta notes that local guides follow the weather and the aurora conditions, and depending on them a tour may head to the coast or up onto the Finnmark plateau. Visit Alta notes that visitors do not have to wait for winter, as tours run from September.

Sorrisniva, a 20-minute drive from the centre of Alta, states that it runs northern lights tours from September to the end of March, with the guide choosing the route according to the prevailing weather and atmospheric conditions.

Visit Alta reminds visitors to dress for the weather and season, and that the northern lights cannot be guaranteed. Visit Alta advises dressing in layers, using wool next to the skin rather than cotton, adding layers of wool or fleece, and finishing with a windproof and water-resistant outer layer. Visit Alta recommends wearing a hat that covers the ears, mittens rather than gloves, and shoes with good grip for icy surfaces. For visitors without suitable winter clothing, Visit Alta notes that renting clothing in Alta is an option.

Where to watch near Alta

What the numbers mean

Four things have to line up before you see anything, and three of them are on this page above. The fourth is your own eyes adjusting, which takes about twenty minutes in real darkness and does not survive a glance at a phone.

Darkness comes first because it cannot be argued with. The aurora is always there when the field is active; you can only see it once the sun is more than 18° below the horizon, which is what the dark band above marks. In Alta that is 8 hours and 40 minutes tonight.

Kp is a global index of how disturbed the Earth's magnetic field is, from 0 to 9, published every three hours. It is a blunt instrument: it says the whole planet was disturbed, not that the aurora is over Alta now. At 70°N the auroral oval usually sits overhead already, so a quiet Kp is no reason to stay in.

The local disturbance is the better number, and it is the one most aurora pages do not have. FMI runs magnetometers across Lapland; we take the rate of change of the horizontal field at the nearest one, in nanotesla per minute, which for Alta is Masi, 59 km away. A field moving fast overhead means current flowing overhead, which is the aurora itself. Above roughly 40 nT/min it is usually visible; above 100 a substorm is running and it will be moving.

Cloud ends most attempts. The figure above is the total cloud cover MET Norway's Locationforecast forecasts for the dark hours, at these exact coordinates. Anything over about 70% and you will not see through it; under 30% and it stops mattering.

The moon does not stop the aurora. A full moon high in the sky washes out the faint green arcs that make up most displays, so a strong night still shows and a marginal one does not.

Plan the trip

Nearby

Also on this site: how the daylight changes through the year, and the other 12 places.