Aurora Borealis in London
United Kingdom · 51.51°, -0.13° · geomagnetic 53.4° · needs Kp 7
Tonight's aurora forecast for London
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. London needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.9. Short of the threshold, which is what most nights look like here.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:36 UTC
Local aurora guide for London
Auroras are visible at London's geomagnetic latitude of 53.4° when the planetary Kp index reaches 7.
Based on historical data, there are approximately 2.7 nights per year when conditions are suitable for viewing.
The period from 2016 to 2026 has been analyzed for these potential viewing opportunities.
The best months for aurora viewing in London are September, August, and November.
During June and July, there is no full darkness, which can impact visibility.
London experiences a Bortle 9 sky, indicating significant light pollution.
Areas with darker skies, such as Bortle 4, are located 78 km east, and Bortle 5 skies are found 70 km north-east near Braintree.
Local terrain features include Regent’s Park to the north-west, Swanfield Street to the east-north-east, Hampstead Heath to the north-north-west, Highgate to the north-north-west, and Hollow Ponds to the north-east.
Regent’s Park is a park located 3.2 km north-west of London.
Swanfield Street is a hill situated 4.1 km east-north-east of London.
Hampstead Heath, a park, is 6.9 km north-north-west of London, while Highgate, a hill, is 7.2 km north-north-west of London. Hollow Ponds, a lake, is 12.2 km north-east of London.
There have been 52 verified aurora reports within 300 km of London between January 2015 and December 2016.
The historical record indicates approximately 2.7 viable aurora nights per year.
Notable qualifying nights within the 2016-2026 record span include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), January 19, 2026 (Kp 8.67), November 12, 2025 (Kp 7.33), and November 11, 2025 (Kp 8.67).
Sources: Revon analysis of NOAA planetary Kp · Revon location dataset · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports
Know when it is worth going outside
Revon watches the London forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of London.