Northern lights in Donegal tonight
County Donegal, Ireland · 55° magnetic latitude · Kp 5 threshold
Kp 1 is well below the Kp 5 threshold needed for aurora to be visible from Donegal.
7-day outlook for Donegal
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
auroratonight.space
What Kp is needed here?
Donegal sits at a magnetic latitude of approximately 55°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 5 before the auroral oval expands far enough south to be visible from here.
At Kp 5, visibility is possible from Donegal 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 Donegal
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Malin Head
Get directions ↗The northernmost point of Ireland at 55.4°N. The headland faces open ocean to the north with minimal light pollution in any direction. The cliff tops give a 180-degree northern sky. During G2 storms, aurora has been photographed here at low elevation above the sea horizon. Access is straightforward - a car park and short walk to the observation point.
Glenveagh National Park
Get directions ↗Ireland's second largest national park, covering 170 square kilometres of Donegal uplands. Almost no artificial light within the park boundaries. The open moorland gives wide sky views. The park is 25 km south of Letterkenny. The car parks at Glenveagh Castle and Lough Veagh are good starting positions. Cold in winter - the valley floor can hold frost from September to May.
Inishowen Peninsula
Get directions ↗The peninsula between Lough Swilly and Lough Foyle extends north to Malin Head. The western coast roads have open sea views to the north and northwest with low light pollution. The cliffs at Glengad Head and the beaches at Trawbreaga Bay are accessible dark sites. The peninsula is about an hour from Letterkenny on single-track roads.
Best time to see the northern lights in Donegal
At 55°N magnetic latitude, Donegal 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 Donegal'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 Ireland aurora forecasts
How often does the aurora appear in Donegal?
Average nights per month the Kp reached Donegal's threshold of 5+, from 15 years of geomagnetic data (2010–2024).
Counts the Kp 5+ 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 Donegal
Best window
The February to April window averages 4 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 March.
Related pages
Northern Lights Ireland
Ireland aurora hub - all counties with current Kp status.
Read →Northern Lights Galway Tonight
Galway - Connemara dark sky and west coast aurora.
Read →Northern Lights Dublin Tonight
Dublin - Irish capital aurora guide, needs Kp 6.
Read →What Is the Kp Index?
How Kp 5 translates to visibility at 55°N magnetic latitude.
Read →Northern Lights Viewing Tips
Planning a Donegal aurora trip - cloud cover, timing, and equipment.
Read →Planning your aurora trip
In-depth guides to help you plan a trip to see the northern lights.
Travel Guide Ireland Northern Lights Ireland - Complete Viewing Guide
Malin Head, Donegal, Mayo, and Kerry - the best locations for northern lights in Ireland, Kp thresholds, and why cloud cover is the real challenge.
Planning Ireland Best Time to See the Northern Lights in the UK
When aurora is most likely from Scotland, northern England, and Ireland throughout the year.
Travel Guide All destinations How to Plan a Northern Lights Trip
Destination, timing, accommodation, app setup, and how to read a space weather forecast.
