Can you see the northern lights in Helsinki tonight?

Helsinki is not an aurora destination. The Finnish Meteorological Institute's statistics put the aurora over Helsinki about once a month in the dark seasons, but the city's lights usually prevent it being seen. If viewing the lights is your priority, you should plan to head further north.

When the northern lights reach Helsinki

Official figures from the Finnish Meteorological Institute (Ilmatieteen laitos, or FMI) indicate that on dark, cloudless nights, the aurora appears over the south coast roughly once a month. By comparison, it occurs once a week at the latitudes of Jyväskylä and Kuopio, and three nights in four at Kilpisjärvi. MyHelsinki, the city's official visitor site, similarly notes that the northern lights are seen in Finland mostly in northern Lapland, and statistically only around one night a month in the far south, though sightings remain possible.

According to Visit Finland, the KP index measures geomagnetic activity on a scale from 0 to 9; a reading of 1 to 2 might suffice in northern Lapland, while higher readings mean stronger displays visible further south. FMI notes that solar activity governs the number of auroras most strongly in southern regions, whereas in Lapland displays happen more evenly every year. Most auroras typically arrive a couple of years after the sunspot maximum.

Timing during the year also dictates your chances:

• Equinoxes: FMI explains that around the autumn and spring equinoxes, the Earth's position in the solar wind is most favourable for energy to reach the magnetosphere, making magnetic storms more frequent on average in autumn and spring than in winter or summer.
• Early autumn: In early autumn and late spring, nights in Lapland remain too light. However, the sky in southern Finland is already dark enough, meaning strong early-autumn magnetic storms can be seen especially in the southern Finnish sky. Visit Finland ranks October and November among the statistically strongest months for activity.
• Late winter and spring: FMI notes that summer nights are too light for sightings. While autumn brings activity, cloud cover across Finland is abundant in autumn and winter—covering about 65% to 85% of the sky and increasing from the northwest towards the southeast. Clear days are least frequent in November and December. Because spring is on average less cloudy, FMI recommends March as a time to wait for the aurora.

Weather does not dictate whether auroras occur, but because the lights form above all clouds, thick cloud cover blocks them entirely. When skies are clear, FMI notes that good aurora weather is usually cold, and finding displays requires patient waiting. A couple of hours either side of midnight is the most typical window, though during large geomagnetic storms the lights can blaze from sunset until sunrise.

How to get to Helsinki, and on to Lapland

Helsinki Airport sits 20 km from the city centre. The trip into town takes about 30 minutes by train or car, and about 40 to 50 minutes by bus. The airport railway station is directly beneath the terminal; P and I trains reach the city centre in about 30 minutes, with tickets sold via the platform ticket machines or the HSL app. Alternatively, HSL trunk bus line 600 makes the journey between the airport and the centre in about 40 minutes.

Because the northern lights are seen in Finland mostly in northern Lapland, you can continue north from Helsinki towards the best places to see the northern lights. Rail travel between Helsinki Airport and the rest of Finland operates on a single ticket, with the easiest transfers from airport trains situated at Pasila and Tikkurila. VR operates overnight passenger services—including the Helsinki to Rovaniemi train—with routes terminating at Rovaniemi, Kemijärvi and Kolari. These night trains can transport cars, and on the busiest ski-season nights, up to five night trains depart Helsinki for the north.

Where to stand to see the aurora

FMI states that the faint aurora is best seen with the naked eye under a clear, dark sky away from city and traffic lights, with an open view of the northern horizon. In southern Finland, the aurora is seen most often in the northern sky. Because human night vision is limited, FMI advises waiting in the dark for roughly half an hour to let your eyes adjust.

MyHelsinki highlights two spots within the municipality where people have reported sightings in autumn and winter:

• Suomenlinna: The HSL ferry operates from the Market Square (Kauppatori) to the main pier every day of the year, running from early morning until late at night. In winter, crossings run at least once an hour and take about fifteen minutes.
• Taivaskallio: Located in the Käpylä district of Helsinki, this park features a hill almost 60 m high that is also popular for winter sledding.

For visitors who do not catch a display outdoors, MyHelsinki points to the virtual aurora presented at the Finnish Nature Centre Haltia (Suomen luontokeskus Haltia). Haltia is located next to Nuuksio National Park. HSL buses 245 and 245A run from Espoo Centre directly to the Haltia stop; travelling there from Helsinki city centre requires an ABC public transport ticket.