Daylight in Utsjoki

Lying at 69.91°N along the Teno (Tana) river valley on the Norwegian border, just south of Nuorgam, Utsjoki is the northernmost municipality in Finland and the European Union. It marks the extreme north of the Finnish daylight curve: polar night lasts 51 days, from the first sunless day on 26 November until the last on 15 January, with the sun rising again on 16 January. In summer, the midnight sun remains continuously above the horizon for 72 days from 16 May to 26 July, delivering over ten weeks of unbroken 24h 00m daylight.

Because summer white nights last so long at nearly 70°N, Utsjoki has the shortest seasonal span of astronomical darkness in Finland, starting on 17 September and ending on 24 March. From 25 March through 16 September the sun never drops below -18°. During deep winter, however, the dark hours dominate: on 21 December, Utsjoki experiences 0h 00m of daylight and 13h 34m of astronomical darkness, with the Kevo Subarctic Research Station magnetometer nearby and zero urban light domes along the Teno valley or the Paistunturi wilderness fells.

Practically, topography inside the deep Teno river gorge alters when residents actually see the sun. In Utsjoki church village and along the E75 bridge to Norway at Sámi Bridge, steep valley walls delay direct sunlight into late January even after the astronomical disc clears the flat horizon on 16 January, so locals walk up onto the open fell plateau around Ailigas (357 metres) to greet the first yellow rays. During the May-to-July midnight sun season, salmon anglers on the Teno fish around the clock in cool night hours while blackout curtains are essential in every cabin.

Sampled on the 1st of each month and on the four turning points, in 2026. Times are Utsjoki local time and include the summer-time change, on the last Sunday of March and of October.

The last column is the one that matters for the northern lights: the sun more than 18° below the horizon. It is always shorter than the night, and in midsummer it is zero for weeks at a time even where the sun still sets.