Live aurora forecast

Northern lights in Hammerfest tonight

Finnmark, Northern Norway · 70° magnetic latitude · Kp 1 threshold

Aurora visibility · Hammerfest
6/9
Good chance tonight

Kp 6 exceeds the visibility threshold for Hammerfest. Head out if skies are clear and you have a dark site.

QuietStormExtreme
Threshold
Kp 1
Magnetic latitude
~70°N
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 5 Jul, 17:29 UTC

7-day outlook for Hammerfest

Today
5 Jul
6
Good chance
Tomorrow
6 Jul
3
Good chance
Tue
7 Jul
3
Good chance
Wed
8 Jul
3
Good chance
Thu
9 Jul
3
Good chance
Fri
10 Jul
3
Good chance
Sat
11 Jul
3
Good chance

Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.

auroratonight.space

What Kp is needed here?

Hammerfest sits at a magnetic latitude of approximately 70°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 before the auroral oval expands far enough south to be visible from here.

At Kp 1, visibility is possible from Hammerfest but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Plan your viewing

Best dark sky sites near Hammerfest

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Salen hill

Get directions ↗
Bortle Class 2 - Excellent dark sky 1 km from Hammerfest - approximately 20 minute walk or 5 minute drive

Salen is a 258 m hill that rises directly behind the town. The main viewpoint is accessible by a marked path from the town centre or a short drive to a car park partway up. From the crest, the Hammerfest light dome falls behind the ridge and the north-facing slope opens across Sørøysundet - the strait between Hammerfest island and Sørøya. Bortle Class 2 to the north and west. One of the most accessible aurora viewpoints above any Norwegian Arctic town, requiring neither a ferry nor a long drive.

Hammerfest island north coast

Get directions ↗
Bortle Class 1–2 - Excellent dark sky 10 km from Hammerfest - approximately 15 minute drive

The north coast of Hammerfest island faces across Sørøysundet toward Sørøya, with open sea visible to the west and nothing between the viewpoint and the Barents Sea to the north. The coast road north from town passes through open moorland with scattered farms before reaching the northern shoreline. From here the town lights are entirely below the horizon. Sky quality is Bortle Class 1–2. Drive north from Hammerfest on Riksvei 94 and take the coastal track north of Forsøl village.

Kvalsund bridge area

Get directions ↗
Bortle Class 2 - Excellent dark sky 35 km from Hammerfest - approximately 35 minute drive

Kvalsund is a small settlement where Hammerfest island connects to the mainland by bridge over Kvalsundet. The landscape here is open coastal tundra, flat and dark in all directions. The bridge gives a clear north-facing view down the strait toward the island, and the surrounding moorland has no significant light sources. Drive east from Hammerfest on E6/Rv94 toward Alta. Kvalsund is a useful fallback when coastal conditions around the town are overcast, as its inland position sometimes holds clearer sky.

When to go

Best time to see the northern lights in Hammerfest

At 70°N magnetic latitude, Hammerfest 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 Hammerfest'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.

Up to 8 locations

Hammerfest

Norway

Good chance
Kp 6 need Kp 1
Checking darkness…
Tromsø

Norway

Good chance
Kp 6 need Kp 1-2
Checking darkness…
Alta

Norway

Good chance
Kp 6 need Kp 1-2
Checking darkness…
The odds

How often does the aurora appear in Hammerfest?

Average nights per month the Kp reached Hammerfest's threshold of 1+, from 15 years of geomagnetic data (2010–2024).

24.8Jan
27.3Feb
26.4Mar
0Apr
0May
0Jun
0Jul
0Aug
14.3Sep
31.1Oct
25Nov
22.6Dec

Counts the Kp 1+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0

Make it happen

Plan your trip to Hammerfest

Based on 15 years of geomagnetic data (2010–2024)

1st
October
31.1
avg aurora nights
Requires an extended stay
2nd
February
27.3
avg aurora nights
Stay 1+ nights for 80% chance
3rd
March
26.4
avg aurora nights
Stay 1+ nights for 80% chance

Best window

The October to December window averages 79 aurora nights - the strongest consecutive stretch of the year.

How long to stay

Aurora at this latitude requires patience - allow as many nights as possible during October.

From the community

Aurora photographs from Hammerfest

Real photos sourced from Wikimedia Commons.

Aurora over HammerfestAurora over Hammerfest
Aurora over HammerfestAurora over Hammerfest
Aurora over HammerfestAurora over Hammerfest
Aurora over HammerfestAurora over Hammerfest
Aurora over HammerfestAurora over Hammerfest
Aurora over HammerfestAurora over Hammerfest
Questions

Common questions about aurora in Hammerfest

How does Hammerfest compare to Tromsø for aurora?
Hammerfest sits at 70°N magnetic latitude - identical to Tromsø - so the Kp threshold and seasonal window are the same. The difference is visitor numbers and sky access. Tromsø handles tens of thousands of aurora tourists each winter; Hammerfest sees a fraction of that. The town is smaller (around 10,000 people against Tromsø's 75,000) and dark sky positions - Salen hill and the north coast - are within minutes of the centre. For aurora watching, Hammerfest delivers the same probability as Tromsø with less competition for the best positions.
What Kp is needed at 70°N magnetic latitude?
At 70°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 only Kp 1 before aurora appears on clear nights. At Kp 1, a faint arc sits low on the northern horizon; at Kp 2 the display develops rays and structure; at Kp 3+ it may fill much of the sky. Hammerfest sits inside the auroral oval for most of the year, meaning even relatively quiet geomagnetic conditions produce visible aurora throughout the dark season.
What is polar night like in Hammerfest?
Hammerfest's polar night - the period when the sun does not rise above the horizon - runs from approximately 21 November to 21 January, around 62 days. During this period it is continuously dark at solar noon, though civil twilight gives a brief blue period around midday. The potential aurora-watching window extends to around the clock during polar night, though the most active displays tend to occur in the hours around midnight. Hammerfest has a tradition of celebrating the return of the sun with a formal Soldagen ceremony in late January.
How often is aurora visible from Hammerfest during the season?
During the aurora season (August to April) with a Kp 1 threshold, aurora is potentially visible on any clear night with minimal geomagnetic activity. In practice, cloud cover is the main constraint at 70°N on the Norwegian Atlantic coast. On average, there are 15–25 nights per winter with clear sky suitable for aurora observation. During active periods - which occur several times each season - displays can last for hours. Monitoring the 3-day forecast here alongside cloud cover maps gives the best advance warning of productive nights.
How do I get to Hammerfest?
Hammerfest Airport (HFT) is served by Widerøe from Tromsø, Alta, and Oslo via connections. The road from Tromsø is approximately 350 km via Alta - around 4.5 hours of driving in good conditions. The E69 plateau road from Alta can be closed in severe weather; check road conditions on vegvesen.no before travelling in winter. The Hurtigruten coastal ferry also calls at Hammerfest, connecting it to Bergen, Tromsø, and other ports along the Norwegian coast.
Photograph the aurora

Recommended gear

Tested picks for capturing the aurora on long, cold nights.

As an Amazon Associate, Aurora Tonight earns from qualifying purchases. Affiliate links never influence the forecast or which gear is recommended.

Aurora Tonight

Aurora Tonight

Add to your home screen for instant aurora alerts

Add to your home screen

Tap then Add to Home Screen for instant aurora alerts