Aurora is visible from Maine several times a year. In central Maine the geomagnetic latitude is about 54°, so the northern lights usually need a Kp index of about 4.5 or higher to appear low on the northern horizon; the north of the state (around Fish River Falls) needs about Kp 3.0.
Kp needed (center)
Kp 4.5
geomag. lat 54°
Kp needed (north)
Kp 3.0
Fish River Falls
Kp needed (south)
Kp 5.0
Whaleback Light
Kp needed in Maine cities
| City | Geomagnetic lat. | Kp needed | City sky |
|---|---|---|---|
| Portland | 52.8° | Kp 5.0 | 8 |
| Lewiston | 53.3° | Kp 4.5 | 7 |
| Bangor | 54.0° | Kp 4.5 | 7 |
| West Scarborough | 52.8° | Kp 5.0 | 7 |
| South Portland | 52.8° | Kp 5.0 | 8 |
| South Portland Gardens | 52.8° | Kp 5.0 | 7 |
| Auburn | 53.3° | Kp 4.5 | 7 |
| Biddeford | 52.7° | Kp 5.0 | 7 |
| Sanford | 52.6° | Kp 5.0 | 6 |
| Saco | 52.7° | Kp 5.0 | 7 |
| Augusta | 53.5° | Kp 4.5 | 6 |
Approximate Kp for aurora low on the northern horizon (camera-visible). Higher Kp lets it climb higher and show color to the eye.
Dark, northern photo locations in Maine
| Location | Type | County | Est. Bortle |
|---|---|---|---|
| Katahdin Woods and Waters National Monument | Dark Sky Place | Penobscot County | 1 |
| Baxter State Park | State Park | Piscataquis County | 1 |
| Quoddy Head State Park | State Park | Washington County | 1 |
| Cobscook Bay State Park | State Park | Washington County | 1 |
| Roque Bluffs State Park | State Park | Washington County | 1 |
| Lily Bay State Park | State Park | Piscataquis County | 1 |
| Shackford Head State Park | State Park | Washington County | 1 |
| Rangeley Lake State Park | State Park | Franklin County | 2 |
| Height of Land Scenic Overlook | Scenic Viewpoint | Franklin County | 2 |
| Overlook Park | Scenic Viewpoint | Washington County | 1 |
| Mount Blue State Park | State Park | Franklin County | 2 |
| Moosehead Lake | Lake | Piscataquis County | 1 |
How to photograph the northern lights
- Watch the live Kp forecast above and NOAA's 30-minute aurora forecast; storms often peak between 10 p.m. and 2 a.m.
- Find an unobstructed view to the north — a lake, open field or ridge — away from town lights.
- Start at ISO 1600–3200, f/2.8 or faster, 5–15 seconds; shorter exposures keep fast-moving curtains sharp.
- Your camera sees aurora as green or red long before your eyes do — take test shots whenever Kp is near the threshold.
- Moonlight lights the foreground but washes out faint aurora; strong storms are still worth shooting under a bright moon.
FAQ
Can you see the northern lights in Maine?
Yes, several times a year. Central Maine usually needs about Kp 4.5; the north about Kp 3.0.
What Kp index do I need?
Roughly Kp 4.5+ for central Maine. Kp is a 0–9 scale of geomagnetic activity; each step moves the aurora's southern edge a few degrees of latitude.
Where is the best place to see the aurora in Maine?
Dark sites with a clear northern view, such as Katahdin Woods and Waters National Monument, Baxter State Park, Quoddy Head State Park.