All locations Norway Mehamn

Northern lights Mehamn tonight

Mehamn sits at ~71°N magnetic latitude on the Barents Sea coast of eastern Finnmark. Kp 1 is the threshold - one of the lowest in mainland Norway. Slettnes Lighthouse, 20 km east, is the northernmost road-accessible point of the European mainland, with Bortle Class 1-2 sky and a 270° open sea horizon. Polar night (mørketid) runs approximately 20 November to 22 January. Best season: October to April.

Aurora visibility - Mehamn

Possible tonight

Kp 1 is at the threshold for Mehamn. Aurora may be visible from a dark site if cloud cover permits.

Current Kp

1

of 9

Threshold for Mehamn: Kp 1 Magnetic latitude: ~71°N Updated: 3 Jun, 18:12 UTC
↓ Bz nT Solar wind km/s Density p/cm³
Conditions right now: Kp + Bz + solar wind + cloud + moon

7-day outlook for Mehamn

Today

3 Jun

Quiet

Tomorrow

4 Jun

Quiet

Fri

5 Jun

Quiet

Sat

6 Jun

Quiet

Sun

7 Jun

Quiet

Mon

8 Jun

Quiet

Tue

9 Jun

Quiet

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

auroratonight.space

What Kp is needed here?

Mehamn sits at a magnetic latitude of approximately 71°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 Mehamn 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 Mehamn

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

Mehamn harbour headland

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Bortle Class 2 - Excellent dark sky At Mehamn - the headland is directly accessible from the harbour

The headland at Mehamn gives an open Barents Sea horizon to the north and northeast. Mehamn is a small fishing village with minimal light pollution outside the working harbour area. Bortle Class 2 from the headland positions away from the quay lights. At Kp 1, aurora appears above the dark northern horizon over the Barents Sea - at 71°N magnetic latitude this is among the lowest Kp levels needed anywhere on the Norwegian mainland. The headland is exposed and cold in winter; wind chill at the coast can be severe when winds come off the Barents Sea. Suitable clothing is essential. The harbour itself has working lights that affect the immediate surroundings, so the headland 200-300 m to the northwest gives cleaner sky.

Slettnes Lighthouse

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Bortle Class 1-2 - Exceptional dark sky 20 km east of Mehamn - approximately 25 minute drive on the Fv891

Slettnes is the northernmost point of the European mainland accessible by road, and the site of the Slettnes Lighthouse (1905). The lighthouse sits on a flat, treeless headland at 71°N with the Barents Sea on three sides. Bortle Class 1-2. There is zero settlement light pollution at the headland - the nearest village is Gamvik, 3 km to the west. The aurora is frequently visible in multiple directions simultaneously from this position given the 270° open sea horizon. The road from Mehamn is sealed but narrow and may be icy in winter. The landscape is flat tundra - there is no elevated terrain to block any part of the sky. This is one of the most northerly drive-to aurora positions in mainland Norway.

Gamvik village coast

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Bortle Class 2 - Excellent dark sky 17 km east of Mehamn - approximately 20 minute drive

Gamvik is a small village 3 km west of Slettnes Lighthouse, on the Barents Sea coast. The shore at Gamvik faces north over open water. Bortle Class 2. A useful intermediate stop between Mehamn and Slettnes for those who want a quick dark sky position without driving the full distance to the lighthouse. The village has a small guesthouse and is the nearest settlement to Slettnes. In winter, the Gamvik coast road is ploughed and accessible. From the shore, aurora appears above the dark water to the north with the flat Finnmark tundra behind.

Best time to see the northern lights in Mehamn

At 71°N magnetic latitude, Mehamn 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 Mehamn'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.

Compare nearby locations

Up to 4 locations

Mehamn

Norway

Possible
Kp 1 need Kp 1
Checking darkness…
Honningsvåg

Norway

Possible
Kp 1 need Kp 1
Checking darkness…
Alta

Norway

Possible
Kp 1 need Kp 1-2
Checking darkness…

How often does aurora appear in Mehamn?

Average nights per month when Kp reaches 1+ - based on 15 years of data

24.8
27.3
25.3
13.2
31.1
25.0
22.6
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best month

October

Average aurora nights per year

169

Kp threshold

1+

Based on 15 years of geomagnetic data (2010-2024). Shows nights when Kp reached 1+ at any point in the day - cloud cover and local darkness not included. Months with no astronomical darkness show zero.

Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0

Plan your trip to Mehamn

Based on 15 years of geomagnetic data

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

25.3

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.

Common questions

Aurora watching in Mehamn - Slettnes Lighthouse, polar night logistics, and reaching eastern Finnmark.

What makes Mehamn and Slettnes significant aurora locations?
Mehamn and Slettnes sit at 71°N magnetic latitude - the highest of any location on the Norwegian mainland outside North Cape. At this latitude, aurora appears at Kp 1, which is below the threshold needed anywhere in Lofoten or around Tromsø. Slettnes Lighthouse is at the northernmost point of the European mainland accessible by road, with a 270° open sea horizon and Bortle Class 1-2 sky. Few locations worldwide combine this latitude, this level of sky darkness, and road access. The trade-off is remoteness: Mehamn is 190 km from Honningsvåg on narrow Finnmark roads, and the nearest airport is at Mehamn itself (MEH) with limited services.
What Kp is needed for aurora at Mehamn?
Kp 1 from the headland and Slettnes Lighthouse positions. The Kp index measures global geomagnetic activity on a 0-9 scale, updated every 3 hours. At 71°N magnetic latitude, aurora is visible during any period of genuine geomagnetic activity above the background level. Even on quiet nights (Kp 0-1), faint aurora may appear above the northern horizon from Slettnes. Kp 2+ gives a structured display clearly overhead. Kp 3+ fills the sky.
When is aurora season at Mehamn, and what is the polar night?
The aurora season is October to April, but Mehamn has a long polar night (mørketid) - the sun stays below the horizon from approximately 20 November to 22 January, around 60 days. During this period, darkness is continuous and aurora can be observed at any hour given clear skies. Even outside polar night, usable darkness extends from early afternoon to late morning in November and February. The long polar night is both an opportunity - a maximum window for aurora - and a practical constraint: travel to Mehamn requires planning around limited road conditions and restricted services.
How do I get to Mehamn?
Mehamn Airport (MEH) has flights from Tromsø and Alta operated by Widerøe, typically with one or two services per day. By road, Mehamn is reached via the Fv891 from Kjøllefjord and the E75 - the total road journey from Alta is approximately 400 km (5-6 hours). From Honningsvåg (North Cape area) it is around 190 km on narrow inland roads. A hire car is needed. Road conditions in winter can be difficult - check Statens vegvesen (Norwegian Public Roads Administration) for closures before departure. Accommodation in Mehamn is limited to one small guesthouse; book well in advance.
Is Mehamn practical for a dedicated aurora trip or just for passing visitors?
Mehamn is primarily for dedicated visitors rather than those passing through. It is at the end of a long road in eastern Finnmark with limited services. The aurora conditions - Kp 1 threshold, Bortle Class 1-2 at Slettnes, 60-day polar night - are genuinely exceptional. But the logistics require commitment: a flight to Mehamn Airport, or a full day of driving from Alta or Tromsø. Those who make the effort report aurora quality that is difficult to match elsewhere in mainland Europe. For those who want Kp 1-threshold aurora without the full Mehamn journey, Tromsø (70°N) gives similar geomagnetic conditions with far easier access.

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