# Northern lights in Lerwick tonight and this season > Northern lights in Lerwick now: NOAA aurora probability, the Kp index the city needs (Kp 3) and the dark-sky season dates, calculated from the sun. Canonical: https://kpforecast.com/lerwick/ Updated on: 2026-10-09 Aurora probability over Lerwick right now from NOAA, the Kp index the city needs by geomagnetic latitude, the nights that get dark enough, calculated from the sun, and whether any guided tour passes the catalogue filter. ## In short Northern lights in Lerwick need a Kp index of 3 or more, because the city sits at 61.8° 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 Lerwick (sun 18° below the horizon) run from 22 August to 20 April. No guided aurora tour from Lerwick passes the catalogue filter of 4.3 stars and 20 reviews yet. 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 Lerwick: 3 or more, from 61.8° N geomagnetic latitude (WMM2025 dipole) - Fully dark nights in Lerwick (sun 18° below the horizon) run from 22 August to 20 April. - Aurora probability over Lerwick from NOAA OVATION, refreshed every 15 minutes with the fetch time shown - No guided aurora tour in the catalogue passes the filter yet - Kp forecast for the next 3 days in 3-hour slots, and the other places in Scotland for comparison ## Aurora over Lerwick right now Live figures on the web page, refreshed every 15 minutes. ## The Kp index Lerwick needs Lerwick lies at 60.2° N, which is 61.8° 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 Lerwick from Kp 3, 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 Lerwick 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 Lerwick (sun 18° below the horizon) run from 22 August to 20 April. From 11 May to 1 August the sky never gets darker than nautical twilight, so only a strong display shows, low on the horizon. Dates are an own calculation from the sun's declination for the latitude of Lerwick, 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 Scotland for the northern lights Scotland is the part of the United Kingdom with the best odds. Shetland, where the locals call the aurora the Mirrie Dancers, needs Kp 3, and Edinburgh needs Kp 4, which happens several times in an active winter. The north coast, Orkney and the Isle of Skye have the darkest skies on the mainland side. [All places in Scotland with their odds tonight](/scotland/). ## Lerwick compared with the other places in Scotland The table ranks the 2 places in Scotland on this site by the Kp they need. Lerwick is the best placed with Kp 3. Place | Latitude | Geomagnetic | Kp needed | Tours Lerwick | 60.2° N | 61.8° N | 3 | 0 Edinburgh | 56.0° N | 58.1° N | 4 | 0 ## Northern lights tours in Lerwick No guided aurora tour from Lerwick passes the catalogue filter of 4.3 stars and 20 reviews yet. The aurora probability above does not depend on tours: a dark spot outside the lights of the town is the first thing to find. ## Lerwick in numbers for northern lights planning | Fact | Value | Source | |---|---|---| | Coordinates | 60.2° N, 1.1° W | site destination list | | Geomagnetic latitude | 61.8° N (WMM2025) | NOAA NCEI, own calculation | | Kp needed | 3+ | NOAA rule of thumb | | Fully dark nights | 22 August to 20 April | own calculation (Meeus), USNO definitions | | Too bright for faint aurora | 11 May to 1 August | own calculation (Meeus), USNO definitions | | Tours that pass the filter | none yet, counted 9 Oct 2026 | booking catalogue | ## Frequently asked questions ### What Kp index do you need to see the northern lights in Lerwick? Kp 3 or more. Lerwick sits at 61.8° N geomagnetic latitude, and NOAA's rule of thumb puts the edge of the auroral oval there from Kp 3. A brighter display can show low on the northern horizon one level earlier. ### When is the best time to see the northern lights in Lerwick? Fully dark nights in Lerwick (sun 18° below the horizon) run from 22 August to 20 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 Lerwick in summer? From 11 May to 1 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 Lerwick? None in the catalogue passes the filter of 4.3 stars and 20 reviews yet, so this page shows the probability and the Kp needed for Lerwick without tours. ### Is Lerwick the best place in Scotland for the northern lights? By Kp needed, yes: Lerwick needs Kp 3, the lowest of the 2 places in Scotland on this site. Clouds and light decide the rest. ### Why does the Lerwick 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, 3, 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 - [US Naval Observatory, rise, set and twilight definitions](https://aa.usno.navy.mil/faq/RST_defs), checked on 2026-10-09