Storm watch · Kp 5.0

Kp 5.0 forecast in the next 3 days — the aurora could push much further south than usual.

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Norway · Aurora borealis

Is the aurora visible in Tromsø tonight?

Right now

Wait for dark.

Kp is 0.7. Tromsø needs Kp 1+ for the oval overhead — right now it’s low on the northern horizon.

Tonight's peak is forecast around Kp 5.0 (Minor storm). The forecast still depends on darkness, cloud and the moon at your exact spot.

Reliable about 30 minutes ahead — cloud decides the rest.

Tromsø sits right under the auroral oval — it needs roughly Kp 1+ for the northern lights to come into view. Here's tonight's live space weather and how to plan around it.

Come back at 08:53 PM — that’s when the sky goes dark and the aurora could show.

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How to see the aurora from Tromsø

Face north and find a clear, low horizon in that direction. Everything else — dark skies, adapted eyes, the camera trick — is the same anywhere on Earth, so it lives in the how to photograph the aurora guide.

When can you see the northern lights in Tromsø?

Aurora season in Tromsø runs roughly September – March. Here the months that pay off are September, March, and October — the table below shows why. See the full best time to see the aurora guide for the season in detail.

Tromsø by the numbers

Between Sep 1, 2025 and Aug 31, 2026, Tromsø had 253 nights dark enough for the aurora, and the planetary Kp reached the Kp 1+ this place needs on 252 of them. Averaged over 2015–2024 and this location's cloud cover, that works out to about 58 aurora-possible nights a year, most of them in September, March, and October.

Month by month at Tromsø
MonthDark hours per nightDark nightsAverage cloud coverAurora-possible nights
January18 h3180%7
February14 h2884%5
March10 h3180%8
April4.8 h2771%11
May0077%0
June0078%0
July0075%0
August0.5 h1778%5
September8.5 h3079%8
October12.8 h3180%7
November16.8 h3086%4
December19.3 h3188%4

Sources: the sun's geometry (dark = at least 6° below the horizon), GFZ Potsdam's Kp index 2015–2024 (CC BY 4.0), ERA5 cloud cover via Open-Meteo (the table shows the monthly mean; the estimate counts days that were not overcast). An estimate for comparing places and months, not a forecast — how we estimate this.

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Aurora tours & stays near Tromsø

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Some links below are paid affiliate links. If you book a tour, reserve a stay or buy gear through them, we may earn a commission — it never costs you anything extra and helps keep the forecast free.

  • GetYourGuide

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    Cover the trip

    Travel medical cover for a trip to Tromsø — remote, cold and weather-dependent — from a few dollars a day.

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In depth

Read the Tromsø destination guide

Best months, where exactly to go, and the tours worth booking — the full guide to seeing the aurora in Tromsø.

Open the guide