Where and When to See the Northern Lights

The first time it happened, I nearly missed it. A pale grey smudge over the hills outside Tromsø that I took for cloud, until our guide told us to look at it through a camera. On the screen it was green. Ten minutes later, nobody needed a screen: the band brightened, rippled and split into curtains that moved faster than seemed possible, with a faint pink edge at the bottom. Knowing where to see the northern lights and when to go turns that moment from a long shot into a fair bet.

How the aurora works, in brief

The northern lights happen when charged particles from the sun hit the upper atmosphere and make its gases glow. They gather in a ring around the magnetic pole called the auroral oval. Get yourself under that ring, in proper darkness, with clear skies, and your chances are good.

Three things matter more than anything else: latitude, darkness and cloud cover. A modest display under a clear sky beats a strong one hidden behind cloud every time.

When to go

In the far north, summer brings the midnight sun, and there is simply no dark sky. The aurora season in northern Europe runs roughly from September to March, sometimes into early April. September and March have the bonus of milder weather, open lakes for reflections, and the equinox periods, which often bring more geomagnetic activity.

Deep winter, December and January, gives the longest nights but also the coldest weather and, on the coast, more cloud. The best hours are usually from late evening until around two in the morning, though displays can come at any time when it is dark.

The sun runs on a roughly eleven-year cycle. The latest peak came around 2024, and activity tends to stay strong for a few years afterwards, so the next couple of winters are still a good time to go.

Where to go

Tromsø and northern Norway

Tromsø sits well inside the auroral oval and is a real city, with restaurants, museums and good transport. The coast is milder than you would expect thanks to the Gulf Stream, but cloud rolls in from the sea. Local guides will drive you inland towards the Finnish border to find clear skies. The Lofoten Islands and Alta are lovely alternatives.

Abisko, Swedish Lapland

Abisko has a reputation for clear skies. Mountains around the lake create a rain shadow that often keeps a patch of sky open when the rest of the region is grey. The Aurora Sky Station, reached by chairlift, gets you above the valley's light. It is small and remote, which is the appeal.

Finnish Lapland

Rovaniemi, Levi, Saariselkä and Inari offer forests, frozen lakes, husky and reindeer trips and the famous glass-roofed cabins. Inland weather is colder but often more settled than on the coast. It is a gentle choice for families.

Iceland

Iceland sits right under the oval and you can see the aurora even from the edges of Reykjavík. The weather changes quickly, so stay flexible and be ready to drive towards whichever part of the island is clear. Þingvellir and the south coast are classic spots. Winter roads can be hard, so check conditions before you set out.

Canada and Alaska

Yellowknife, in Canada's Northwest Territories, is one of the most reliable places on earth for the aurora, with flat terrain, long nights and often clear, very cold skies. Fairbanks in Alaska and Whitehorse in the Yukon are also excellent. Pack for temperatures far below anything you have felt before.

Give yourself more nights than you think you need. The sky decides, not you.

Reading the forecast

Aurora apps and websites show the Kp index, a measure of geomagnetic activity from 0 to 9. In the places above, a Kp of 2 or 3 can already bring a good show. The official NOAA Space Weather Prediction Center publishes forecasts, and the local weather service will tell you about cloud. Check both, and look at the cloud forecast first.

Photographing it

Modern phones handle the aurora surprisingly well in night mode, especially resting on something steady. With a camera, use a tripod, a wide lens with a fast aperture, manual focus set to infinity, and exposures of a few seconds. Faster-moving displays need shorter exposures. And put the camera down for a while. The best part is watching.

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Good to know

• Stay at least three or four nights. Weather is the biggest risk, and more nights mean more chances.
• Get away from lights. Even a small town washes out a faint display.
• Watch the moon. A full moon brightens the sky. The days around a new moon are best for faint aurora.
• Dress in layers: thermal base, wool middle, windproof outer, good boots, a hat and two pairs of gloves.
• Book a guide for at least one night. They know where the clear skies are and will drive to find them.

Choose a place far enough north, give it several dark nights in the right months, and be patient. When the sky finally moves, you will forget how cold you were.