Finland

Finland is the only country in this catalogue that does not call the aurora the northern lights. Norwegian has nordlys, Swedish norrsken, Icelandic norðurljós, all literally northern light. Finnish has revontulet, fox fires, from a story in which an Arctic fox runs across the fells and throws sparks into the sky with its tail. Nobody here has replaced it with something more scientific, and it is still what a guide will say.

The industry underneath it is anything but folkloric: 92 departures from three small Lapland towns, more than Norway and Iceland offer between them here. And it sits on the most uneven sky in Europe. Across eleven seasons of reanalysis, March gives a usable sky on 50.0% of nights at Rovaniemi and 50.3% at Levi, figures matched in Europe only by Kiruna. November gives 20.0% and 22.7%. No other European destination we measure swings that far.

That table explains the thing Finland is actually famous for in this trade. Thirteen of these departures give you your money back if the aurora does not appear, an offer you will not find in Norway or Iceland, and it exists because it had to: for four months of the season the sky above these towns is shut most nights, in a market with ninety-two competitors whose customers mostly arrive in exactly those months.

It is affordable for a second reason, which is geography. Lapland is flat, the roads run in every direction and are maintained through the winter, and the Swedish border is 130 km west of Rovaniemi. A van can put 300 kilometres between you and the cloud. Our number measures the sky above a fixed point; it does not measure what a chase can reach, and in Finland the chase is the product.