# Northern lights in Rovaniemi tonight and this season > Northern lights in Rovaniemi right now: NOAA aurora probability, the Kp index the city needs (Kp 2), the dark-sky season dates and 39 guided tours. Canonical: https://kpforecast.com/rovaniemi/ Updated on: 2026-10-09 Aurora probability over Rovaniemi right now from NOAA, the Kp index the city needs by geomagnetic latitude, the nights that get dark enough, calculated from the sun, and the 39 guided tours that pass the catalogue filter. ## In short Northern lights in Rovaniemi need a Kp index of 2 or more, because the city sits at 63.6° N geomagnetic latitude and NOAA's rule of thumb puts the edge of the auroral oval at about 66° for Kp 0, 2° closer to the equator per Kp level. Fully dark nights in Rovaniemi (sun 18° below the horizon) run from 9 September to 3 April. 39 guided tours leave from Rovaniemi with at least 4.3 stars and 20 reviews, from 69 USD. The aurora probability over the city right now, from NOAA's OVATION model, is on this page and refreshes every 15 minutes. ## Key points - Kp needed in Rovaniemi: 2 or more, from 63.6° N geomagnetic latitude (WMM2025 dipole) - Fully dark nights in Rovaniemi (sun 18° below the horizon) run from 9 September to 3 April. - Aurora probability over Rovaniemi from NOAA OVATION, refreshed every 15 minutes with the fetch time shown - 39 guided tours pass the filter of 4.3 stars, 20 reviews and an aurora title - Kp forecast for the next 3 days in 3-hour slots, and the other places in Finland for comparison ## Aurora over Rovaniemi right now Live figures on the web page, refreshed every 15 minutes. ## The Kp index Rovaniemi needs Rovaniemi lies at 66.5° N, which is 63.6° N geomagnetic latitude on the WMM2025 dipole. NOAA's viewing tips put the edge of the auroral oval at about 66° geomagnetic for Kp 0 and move it about 2° closer to the equator with each Kp level, down to 48° at Kp 9. So the oval reaches Rovaniemi from Kp 2, the threshold the cards on this site compare with the Kp measured right now. NOAA also notes that aurora can often be observed hundreds of kilometres equatorward of the oval's edge, so a bright display can show low on the northern horizon one Kp level earlier. ## Kp forecast for the next 3 days Live figures on the web page, refreshed every 15 minutes. ## When the sky over Rovaniemi is dark enough The aurora needs a dark sky as much as it needs Kp, and darkness is a matter of latitude and date. Fully dark nights in Rovaniemi (sun 18° below the horizon) run from 9 September to 3 April. From 20 April to 22 August the sky never gets darker than nautical twilight, so only a strong display shows, low on the horizon. The midnight sun lasts from 6 June to 5 July, 30 days. Dates are an own calculation from the sun's declination for the latitude of Rovaniemi, with the US Naval Observatory definitions of twilight, and can be a day off at the edges. Clouds and moonlight are the other half of the question: the home page shows the moon phase for each of the next 27 days. ## Why Finland for the northern lights Finnish Lapland sells the aurora with glass igloos and husky farms. Rovaniemi sits on the Arctic Circle with the airport and the second longest tour list on this site, Levi is a ski resort further north, and Saariselkä is the quietest of the three with the darkest sky. Rovaniemi is just outside the oval's quiet edge, so it needs Kp 2 rather than 1. [All places in Finland with their odds tonight](/finland/). ## Rovaniemi compared with the other places in Finland The table ranks the 3 places in Finland on this site by the Kp they need. Saariselkä and Levi share the lowest figure, Kp 1. Place | Latitude | Geomagnetic | Kp needed | Tours Saariselkä | 68.4° N | 65.2° N | 1 | 2 Levi | 67.8° N | 65.0° N | 1 | 7 Rovaniemi | 66.5° N | 63.6° N | 2 | 39 ## Northern lights tours in Rovaniemi 39 guided tours from Rovaniemi pass the catalogue filter (at least 4.3 stars, 20 reviews and the aurora in the title), from 69 USD per person. Prices are starting prices read from the booking catalogue and change with the date. [All tours in the country](/northern-lights-tours/finland/). [[TOURS:rovaniemi:6]] ## Rovaniemi in numbers for northern lights planning | Fact | Value | Source | |---|---|---| | Coordinates | 66.5° N, 25.7° E | site destination list | | Geomagnetic latitude | 63.6° N (WMM2025) | NOAA NCEI, own calculation | | Kp needed | 2+ | NOAA rule of thumb | | Fully dark nights | 9 September to 3 April | own calculation (Meeus), USNO definitions | | Too bright for faint aurora | 20 April to 22 August | own calculation (Meeus), USNO definitions | | Midnight sun | 6 June to 5 July, 30 days | own calculation (Meeus), USNO definitions | | Tours that pass the filter | 39, from 69 USD, counted 9 Oct 2026 | booking catalogue | ## Frequently asked questions ### What Kp index do you need to see the northern lights in Rovaniemi? Kp 2 or more. Rovaniemi sits at 63.6° N geomagnetic latitude, and NOAA's rule of thumb puts the edge of the auroral oval there from Kp 2. A brighter display can show low on the northern horizon one level earlier. ### When is the best time to see the northern lights in Rovaniemi? Fully dark nights in Rovaniemi (sun 18° below the horizon) run from 9 September to 3 April. The darkest skies of the month are the 5 nights around the new moon. The home page shows the moon for each of the next 27 days. ### Can you see the northern lights in Rovaniemi in summer? From 20 April to 22 August the sky never gets darker than nautical twilight, so only a strong display shows, low on the horizon. ### How many northern lights tours are there in Rovaniemi? 39 guided tours from Rovaniemi pass the filter of 4.3 stars and 20 reviews, from 69 USD per person, counted from the booking catalogue on 9 Oct 2026. ### Is Rovaniemi the best place in Finland for the northern lights? By Kp needed, Saariselkä is the best placed in Finland with Kp 1, and Rovaniemi needs Kp 2. ### Why does the Rovaniemi aurora probability on this page change? It comes from NOAA's OVATION model, a forecast for the next 30 to 90 minutes, which this site re-reads at most every 15 minutes. The Kp needed, 2, does not change: it is geography. ## Sources - [NOAA SWPC, tips on viewing the aurora](https://www.swpc.noaa.gov/content/tips-viewing-aurora), checked on 2026-10-09 - [NOAA NCEI, World Magnetic Model 2025, geomagnetic pole](https://www.ncei.noaa.gov/products/world-magnetic-model), checked on 2026-10-09 - [NOAA SWPC, OVATION aurora forecast model](https://www.swpc.noaa.gov/products/aurora-30-minute-forecast), checked on 2026-10-09 - [Viator Partner API, catalogue and operator listings](https://www.viator.com/), checked on 2026-10-09 - [US Naval Observatory, rise, set and twilight definitions](https://aa.usno.navy.mil/faq/RST_defs), checked on 2026-10-09