Very Good
Northern Lights in September
The autumn equinox in September creates optimal geomagnetic conditions for aurora viewing.
Aurora Viewing in September
September offers very good aurora viewing conditions with 10 hours of darkness in Tromso and 10 hours in Fairbanks. The equinox during this month often brings increased geomagnetic activity, enhancing your chances of seeing the aurora.
Darkness Hours by Location
| Location | Dark Hours | Best Viewing Window |
|---|---|---|
| Tromso, Norway | 10h | 11 PM - 1 AM |
| Reykjavik, Iceland | 11h | 11 PM - 1 AM |
| Fairbanks, Alaska | 10h | 11 PM - 1 AM |
| Rovaniemi, Finland | 10h | 11 PM - 1 AM |
Best Destinations in September
Weather Conditions
Average Temperature
Tromso +7C
Reykjavik +8C
Fairbanks +6C
Rovaniemi +7C
What to Expect
September has mild temperatures averaging 7C in northern regions. While warmer, nights can still be cool, so bring a warm jacket for evening aurora viewing.
What to Pack
- Light jacket for evenings
- Layered clothing
- Comfortable outdoor shoes
- Light sweater or fleece
FAQ about Aurora in September
September coincides with the autumn equinox, which historically correlates with increased geomagnetic activity. The equinoxes create optimal alignment between Earth's magnetic field and the solar wind, often resulting in more frequent and intense aurora displays.
In September, darkness hours vary by location. Tromso has approximately 10 hours of darkness, Reykjavik has 11 hours, and Fairbanks has 10 hours. The best viewing window is typically between 10 PM and 2 AM.
For September, pack warm layers as temperatures average 7C in Finnish Lapland. Essential items include a warm jacket, thermal base layers, insulated boots, hat, gloves, and hand warmers. A tripod for photography and the Aurora Now app for alerts are also recommended.
Solar Maximum 2025-2026
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We're entering the most active period for northern lights in over a decade. Don't miss this rare opportunity.