Northern lights in Brighton tonight
East Sussex · 50° magnetic latitude · Kp 7-8 threshold
Kp 1 is well below the Kp 7-8 threshold needed for aurora to be visible from Brighton.
7-day outlook for Brighton
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
auroratonight.space
What Kp is needed here?
Brighton sits at a magnetic latitude of approximately 50°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 7-8 before the auroral oval expands far enough south to be visible from here.
At Kp 7-8, visibility is possible from Brighton but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.
Best dark sky sites near Brighton
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
South Downs - Ditchling Beacon
Get directions ↗The National Trust escarpment above Brighton, about 15 minutes north. Ditchling Beacon at 248 m is the highest point on the East Sussex Downs. The northern scarp gives views over the Weald with minimal light pollution to the north - the quickest dark sky escape from Brighton.
Chanctonbury Ring
Get directions ↗An iron age hillfort on the South Downs ridge west of Brighton, about 30 minutes by car. Open chalk downland at around 240 m with north-facing views and minimal settlement to the north.
Beachy Head
Get directions ↗The chalk headland east of Brighton faces south and east but gives an open horizon in all directions from the clifftop. The northern sky is dark as there is minimal development inland behind Beachy Head. About 25 minutes east of Brighton.
Ashdown Forest
Get directions ↗The High Weald forest north of Brighton, about 35 minutes north via the A23 and A22. The open heathland gives Bortle 4-5 conditions and an elevated position above the surrounding woodland. One of the darker areas in the South-East.
Best time to see the northern lights in Brighton
At 50°N magnetic latitude, Brighton sits at the lower end of regular aurora territory. Only the deep mid-winter months of November through January offer nights dark enough for aurora to be visible, and only then when a significant geomagnetic storm pushes the auroral oval this far south.
Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Brighton's latitude.
Outside November through January, twilight is too bright for aurora viewing even during significant storms. The season is short, but the equinox months on either side of winter can extend it slightly when storm timing aligns.
Other UK aurora forecasts
Up to 8 locations
How often does the aurora appear in Brighton?
Average nights per month the Kp reached Brighton's threshold of 7+, from 15 years of geomagnetic data (2010–2024).
Counts the Kp 7+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0
Plan your trip to Brighton
Best window
The January to March window averages 0 aurora nights - the strongest consecutive stretch of the year.
How long to stay
Aurora at this latitude requires patience - allow as many nights as possible during January.
Related pages
Northern Lights UK
Live aurora forecast hub for all UK regions.
Read →Northern Lights London Tonight
London is just north of Brighton with a similar threshold.
Read →Northern Lights Southampton Tonight
Southampton is west with New Forest dark sky access.
Read →What Is the Kp Index?
Why Kp 7-8 is needed at 50°N magnetic latitude.
Read →Best Time to See Northern Lights UK
When extreme storms producing south England aurora are most likely.
Read →Aurora photographs from Brighton
Real photos sourced from Wikimedia Commons.
Aurora over Brighton 
Aurora over Brighton 
Aurora over Brighton 
Aurora over Brighton 
Aurora over Brighton 
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