Northern lights in Fort William tonight
Scottish Highlands · 57° magnetic latitude · Kp 3-4 threshold
Kp 1 is well below the Kp 3-4 threshold needed for aurora to be visible from Fort William.
7-day outlook for Fort William
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
auroratonight.space
What Kp is needed here?
Fort William sits at a magnetic latitude of approximately 57°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 3-4 before the auroral oval expands far enough south to be visible from here.
At Kp 3-4, visibility is possible from Fort William 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 Fort William
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Glen Nevis
Get directions ↗Immediately east of Fort William. The glen road gives access to genuinely dark sky away from the town lights within 10 minutes. Broad northward views from the upper glen.
Ardnamurchan Peninsula
Get directions ↗The most westerly point of mainland Britain. About 1 hour north-west from Fort William. Extremely low light pollution and open Atlantic horizon to the north.
Rannoch Moor
Get directions ↗About 1 hour south-east via the A82. One of the wildest and darkest areas of Scotland - a vast open plateau with no significant light sources.
Glenfinnan and Loch Shiel
Get directions ↗About 20 minutes west on the A830. The loch shore faces north and west with minimal settlement. Accessible roadside viewing.
Best time to see the northern lights in Fort William
Fort William's aurora season runs from late September through to March, when nights are long enough for truly dark skies. The equinox months, September and March, bring a natural boost in geomagnetic activity, making them statistically the best of the season. Summer months bring too much twilight for aurora to be visible at this latitude.
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 Fort William's latitude.
April through August brings persistent astronomical twilight that washes out aurora completely. Even strong events (Kp 6+) remain invisible during this period because the sky never gets dark enough.
Up to 8 locations
How often does the aurora appear in Fort William?
Average nights per month the Kp reached Fort William's threshold of 3+, from 15 years of geomagnetic data (2010–2024).
Counts the Kp 3+ 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 Fort William
Best window
The February to April window averages 37 aurora nights - the strongest consecutive stretch of the year.
How long to stay
For your best chance in March, plan at least 3 nights.
Related pages
Northern Lights UK
Live aurora forecast hub for all UK regions.
Read →Scotland Aurora Hub
Scotland-wide aurora forecast.
Read →Northern Lights Inverness Tonight
Inverness is 1 hour north-east - same low Kp threshold.
Read →Tips for Viewing the Northern Lights
Dark sites, timing, and what to look for.
Read →What Is the Kp Index?
What Kp 3-4 means for Highland viewing.
Read →Aurora photographs from Fort William
Real photos sourced from Wikimedia Commons.
Aurora over Fort William 
Aurora over Fort William 
Aurora over Fort William 
Aurora over Fort William 
Aurora over Fort William 
Aurora over Fort William Planning your aurora trip
In-depth guides to help you plan a trip to see the northern lights.
Travel Guide UK Northern Lights Scotland - Complete Travel Guide
Shetland, Orkney, Highland coasts, and Galloway Forest - the UK's best aurora destinations.
Photography UK Northern Lights Scotland - Photography Guide
Dark sky locations, foregrounds, and the best conditions for aurora photography in Scotland.
Photography UK Scotland Aurora Photography Locations
Specific spots across the Highlands, Orkney, and Shetland rated for aurora photography.
