Northern lights in Saint John tonight
New Brunswick, Canada · 52° magnetic latitude · Kp 5-6 threshold
Kp 6 is at the threshold for Saint John. Aurora may be visible from a dark site if cloud cover permits.
7-day outlook for Saint John
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
auroratonight.space
What Kp is needed here?
Saint John sits at a magnetic latitude of approximately 52°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 5-6 before the auroral oval expands far enough south to be visible from here.
At Kp 5-6, visibility is possible from Saint John 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 Saint John
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Fundy Trail Parkway
Get directions ↗The Fundy Trail Parkway runs along the Bay of Fundy coast east of Saint John and provides some of the darkest accessible sky in New Brunswick. The coastal cliff edge gives a clear northern horizon with the bay to the south. The parkway closes its main gate in winter but the entrance area remains accessible. Bortle 2 conditions on the outer headlands with no settlement lighting to the north across open water. A Kp 5-6 storm produces a glow low on the northern horizon from the cliff tops, often clearer on a long-exposure camera than to the eye.
Fundy National Park - Point Wolfe
Get directions ↗Fundy National Park on the upper bay coast has earned recognition as a dark sky preserve. Point Wolfe area at the park's south end gives a clear coastal horizon. The park campground provides an accessible base, and the park's interior is largely free of artificial lighting. On a Kp 5-6 storm night, an aurora glow is visible low on the northern horizon from park clearings above the tree line. The tidal bays and coastal cliffs of Fundy make this the best-positioned dark sky site near Saint John.
Kouchibouguac National Park
Get directions ↗A coastal national park on the Northumberland Strait with flat terrain, lagoon beaches, and almost no light pollution to the north across the strait. The park is a designated dark sky preserve. The barrier beach at Kelly's Beach gives an unobstructed 180-degree northern horizon across open water. On a Kp 5-6 storm night, this is one of the best aurora observation positions in Atlantic Canada. The distance from Saint John makes it a target for significant storm forecasts rather than marginal nights.
Best time to see the northern lights in Saint John
At 52°N magnetic latitude, Saint John 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 Saint John'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.
Up to 8 locations
How often does the aurora appear in Saint John?
Average nights per month the Kp reached Saint John'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 Saint John
Best window
The August to October 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 Canada
Canada-wide aurora forecast hub.
Read →Northern Lights Nova Scotia Tonight
Nova Scotia - Kejimkujik Gold Tier Dark Sky Preserve.
Read →Northern Lights Quebec City Tonight
Quebec City - Charlevoix and Laurentides dark sky.
Read →Northern Lights Ontario
Ontario-wide aurora hub - Algonquin and Killarney dark sky.
Read →What Is the Kp Index?
How Kp determines aurora visibility at 52° geomagnetic latitude.
Read →Aurora photographs from Saint John
Real photos sourced from Wikimedia Commons.
Planning your aurora trip
In-depth guides to help you plan a trip to see the northern lights.
Travel GuideCanadaNorthern Lights Canada - Complete Travel Guide
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Travel GuideAll destinationsHow to Plan a Northern Lights Trip
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PlanningAll destinationsBest Time to See the Northern Lights
Month-by-month breakdown of aurora probability, darkness windows, and weather patterns.










