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Northern lights London tonight

London sits at ~51°N magnetic latitude - the lowest in the UK. You need a G3 (Kp 7) storm or stronger. It happens, but it requires both extreme solar activity and clear skies simultaneously.

Aurora visibility — London

Unlikely tonight

Kp 1 is well below the Kp 7+ threshold needed for aurora to be visible from London.

Current Kp

1

of 9

Threshold for London: Kp 7+ Magnetic latitude: ~51°N Updated: 10 May, 11:06 UTC

What Kp is needed here?

London sits at a magnetic latitude of approximately 51°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+ before the auroral oval expands far enough south to be visible from here.

At Kp 7+, visibility is possible from London 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 London

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Ashridge Estate, Hertfordshire

National Trust woodland and open common about 35 miles north of central London. Significantly darker than the city and accessible from the M25/A41.

North Downs, Surrey

The escarpment between Dorking and Guildford gives elevation above the Surrey light dome. Box Hill and Leith Hill are accessible and face north over the Weald.

Dungeness, Kent

Flat shingle headland on the Kent coast. Very open northern horizon over the English Channel. Limited local light sources east of the headland.

South Downs National Park

The chalk ridge between Eastbourne and Winchester is around 50-70 miles south of London. The north-facing scarp slope faces away from London's glow. Best for Kp 8+ events.

Other UK aurora forecasts

UK overview Wales Manchester Yorkshire

Related pages

Northern Lights UK

Live aurora forecast hub for all UK regions.

Northern Lights Wales Tonight

Wales has a lower Kp threshold - Kp 6-7 from dark sites.

Northern Lights Manchester Tonight

Manchester is further north and visible at Kp 6.

Tips for Viewing the Northern Lights

What you need on the night - dark sites, timing, and technique.

What Is the Kp Index?

How the Kp scale works and what Kp 7+ means in practice.

Common questions

Aurora visibility from London - what it takes and where to go.

Can you see the northern lights from London?
During extreme geomagnetic storms - Kp 7 or above. London sits at around 51°N magnetic latitude, and the city has the highest Kp threshold of any UK location. During the May 2024 G5 storm (Kp 8-9), aurora was photographed from multiple London locations. At Kp 7, you need to be at least 30-40 miles from central London and facing a clear northern horizon.
How often does aurora occur in London?
Kp 7 events occur roughly a handful of times per year during solar maximum - but the requirement for clear skies and dark skies simultaneously makes actual visible displays from London quite rare. Perhaps once or twice per year in ideal conditions during an active solar period. The May 2024 events were the first widespread London aurora in around 20 years.
What is the closest dark site to London for aurora watching?
Ashridge Estate in Hertfordshire is around 35 miles north of central London and noticeably darker than the city. The North Downs in Surrey are similar distance south. Both are significantly better than viewing from within the M25. For a serious attempt, travel further - 50-70 miles reduces the light pollution substantially.
What Kp is needed for aurora in London?
Kp 7 as a minimum, and ideally Kp 8+ to be visible with any reliability. At Kp 7 (G3 strong storm), the auroral oval reaches approximately 50°N. London sits just above this, so conditions need to be optimal - very dark site, clear sky, and active storm. At Kp 8-9, aurora has been seen and photographed from central London.
Should I travel north to see aurora if there is a Kp 7 storm?
If you can get to northern England or Scotland in time, yes - the view will be significantly better and the threshold lower. If the storm is already active and you cannot travel far, find the darkest north-facing spot within 60-90 minutes of London. The Kent coast, North Downs, and Hertfordshire countryside are all plausible options during Kp 7+.