Sources The published sources this guide is built from, what each one was used for, and the date we last read it. Prices and timetables on the guide pages also carry their own checked date.
Finnish Meteorological Institute: Auroras in Finland Aurora odds by area (Kilpisjärvi 75%, ski resorts 50%), timing around midnight, best months March and early April. Read Oct 21, 2026 Finnish Meteorological Institute: Northern lights Three nights in four in the Kilpisjärvi–Utsjoki area, every second night in Sodankylä, 21:00–01:00 window, active months. Read Oct 21, 2026 Ilmatieteen laitos: Tähtitieteelliset vuodenajat Polar night lengths: Nuorgam 25 Nov – 17 Jan, Sodankylä about four days before Christmas. Read Oct 21, 2026 FMI: Tilastoja Suomen ilmastosta ja merestä 1991–2020 (Reports 2021:8) Monthly mean temperatures 1991–2020 for Rovaniemi airport, Muonio, Saariselkä, Ivalo airport and Kilpisjärvi; station coordinates. Read Oct 21, 2026 Levi.fi: 8 vuodenaikaa – Kaamos Levi polar night dates, 10 Dec 2025 – 1 Jan 2026. Read Oct 21, 2026 Visit Rovaniemi: Polar Night Rovaniemi polar night description (conflicts with FMI, logged). Read Oct 21, 2026 Visit Finland: Northern Lights in Finland Aurora season late August to early April; most active months. Read Oct 21, 2026 Fintraffic Digitraffic: open rail timetable data Train numbers and Helsinki departure and arrival times to Rovaniemi and Kolari for 15 Dec 2026. Read Oct 21, 2026 VR: Santa Claus Express Night trains from Helsinki or Turku to Rovaniemi, Kolari or Kemijärvi; seats or sleeper cabins; car transport. Read Oct 21, 2026 Finavia: Route listing, winter season 2026–2027 (published 8 Oct 2026) Direct scheduled routes and airlines for Rovaniemi, Kittilä and Ivalo, winter 2026–27. Read Oct 21, 2026 Finavia: Kittilä Airport Levi 15 km and Ylläs about 35 km from Kittilä Airport. Read Oct 21, 2026 Finavia: Ivalo Airport Ivalo Airport serves Lake Inari and Saariselkä. Read Oct 21, 2026 Wikimedia Commons All photos, each with author and licence on the image credits page. Read Oct 21, 2026 Fintraffic Digitraffic rail timetable (VR trains, 15 Dec 2026) Table: Six Finnish Lapland bases: aurora odds, polar night, January cold and how you arrive. Read Oct 21, 2026 Fintraffic Digitraffic rail timetable (VR trains, 15 Dec 2026) Table: Six Finnish Lapland bases: aurora odds, polar night, January cold and how you arrive. Read Oct 21, 2026 OpenStreetMap Map: Rovaniemi OpenStreetMap Map: Levi (fell) OpenStreetMap Map: Ylläs (Yllästunturi fell) OpenStreetMap Map: Saariselkä OpenStreetMap Map: Inari OpenStreetMap Map: Kilpisjärvi