Aurora Tonight
UK forecast› Southampton

Northern lights Southampton tonight

Southampton sits at ~50°N magnetic latitude. Kp 7-8 is the practical threshold. The New Forest is 20 minutes west and gives the best dark sky conditions in Hampshire for major geomagnetic storm nights.

Aurora visibility — Southampton

Unlikely tonight

Kp 1 is well below the Kp 7-8 threshold needed for aurora to be visible from Southampton.

Current Kp

1

of 9

Threshold for Southampton: Kp 7-8 Magnetic latitude: ~50°N Updated: 10 May, 11:06 UTC

What Kp is needed here?

Southampton 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 Southampton 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 Southampton

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

New Forest National Park

About 20 minutes west of Southampton. The open heathland and forest give Bortle 4 conditions across a large area. The heaths around Fritham, Burley, and the central forest give north-facing sky access with minimal light pollution from the surrounding towns.

South Downs National Park

About 25 minutes north-east of Southampton toward Petersfield. The chalk downs give elevated north-facing positions at 200-300 m. The Meon Valley and Butser Hill area are the most accessible from Southampton.

Isle of Wight - north coast

Accessible by ferry from Southampton, the north coast of the Isle of Wight faces the Solent and beyond. The Newtown Estuary and Hamstead Point give open sky with sea on three sides and minimal light from the island itself.

Meon Valley

The valley north of Fareham between the South Downs and the city gives a quiet corridor with darker skies than the coastal strip. The chalk hills on either side give elevated positions in the northern Meon Valley above Droxford.

Other UK aurora forecasts

UK overview London Bristol Brighton

Related pages

Northern Lights UK

Live aurora forecast hub for all UK regions.

Northern Lights London Tonight

London is north-east of Southampton with a similar threshold.

Northern Lights Bristol Tonight

Bristol is north-west with Mendip Hills and Brecon access.

What Is the Kp Index?

What Kp 7-8 means for viewing at 50°N magnetic latitude.

Best Time to See Northern Lights UK

When major storms producing south England aurora are most likely.

Common questions

Aurora watching from Southampton and Hampshire.

Can you see the northern lights from Southampton?
During exceptional geomagnetic storms (Kp 8-9+), aurora has been reported across Hampshire. At Kp 7-8, the New Forest gives the best conditions within 20 minutes of the city. Southampton sits at ~50°N magnetic latitude - the same as Brighton and near the southern limit for UK aurora.
What Kp is needed for aurora near Southampton?
Kp 7-8 from the New Forest or South Downs. At ~50°N magnetic latitude, a strong storm is required for any aurora to be visible. The May 2024 storm (Kp 9) was clearly visible across Hampshire. New Forest locations are the best nearby option.
Is the New Forest good for aurora watching?
The New Forest gives Bortle 4 conditions across a large accessible area. The open heathlands around Fritham and Burley give clear sky with minimal surrounding development. Not a designated dark sky reserve, but substantially darker than Southampton. About 20-25 minutes by car.
Where exactly in the New Forest is best for aurora?
The open heaths around Fritham village in the central forest give the darkest conditions and widest sky. The car park at Fritham gives access without road driving on forest tracks. The heaths north of Lyndhurst along the B3079 also work well. Avoid the coast - the north-facing positions inland are better.
How does Southampton compare to Bristol for aurora?
Very similar. Both sit at ~50-51°N magnetic latitude with identical thresholds. Southampton's advantage is the New Forest (20 min); Bristol has the Mendip Hills (25 min) and access to the Brecon Beacons (60 min). For genuine dark sky aurora, Bristol's route north to the Beacons is the best option for either city.