Northern lights in Rovaniemi in September 2027
Short answer: The darkest, most moon-free nights are 30 Sep, 29 Sep, 28 Sep, 27 Sep, 26 Sep, 25 Sep. Nights average 6.8 hours of darkness in September.
Get out of town light pollution: tours go to frozen lakes and forest cabins.
Wed 1 Sep to Thu 30 Sep 2027
Darkest night: Thu 30 September 2027
Dark 20:44–05:34 · 9.0 h without the moon · moon 1% lit
| Night of | Dark (sun below −12°) | Hours | Moon-free | Moon | Score |
|---|---|---|---|---|---|
| Wed 1 Sep | 23:14–03:25 | 4.3 | 4.3 | 2% | 75 |
| Thu 2 Sep | 23:07–03:31 | 4.5 | 4.5 | 6% | 75 |
| Fri 3 Sep | 23:00–03:37 | 4.7 | 4.7 | 13% | 76 |
| Sat 4 Sep | 22:54–03:43 | 4.8 | 4.8 | 21% | 77 |
| Sun 5 Sep | 22:48–03:48 | 5.2 | 5.2 | 30% | 78 |
| Mon 6 Sep | 22:42–03:54 | 5.3 | 5.3 | 40% | 79 |
| Tue 7 Sep | 22:36–03:59 | 5.5 | 5.5 | 50% | 80 |
| Wed 8 Sep | 22:30–04:04 | 5.7 | 5.7 | 60% | 81 |
| Thu 9 Sep | 22:24–04:09 | 5.8 | 5.8 | 69% | 81 |
| Fri 10 Sep | 22:19–04:14 | 6.0 | 6.0 | 78% | 82 |
| Sat 11 Sep | 22:13–04:19 | 6.2 | 3.7 | 85% | 64 |
| Sun 12 Sep | 22:08–04:23 | 6.3 | 1.8 | 91% | 48 |
| Mon 13 Sep | 22:03–04:28 | 6.5 | 0.2 | 96% | 33 |
| Tue 14 Sep | 21:58–04:32 | 6.7 | 0.0 | 99% | 31 |
| Wed 15 Sep | 21:53–04:36 | 6.8 | 0.0 | 100% | 31 |
| Thu 16 Sep | 21:48–04:41 | 7.0 | 0.0 | 99% | 32 |
| Fri 17 Sep | 21:43–04:45 | 7.2 | 0.0 | 97% | 34 |
| Sat 18 Sep | 21:38–04:49 | 7.3 | 0.0 | 92% | 37 |
| Sun 19 Sep | 21:33–04:53 | 7.3 | 0.0 | 85% | 41 |
| Mon 20 Sep | 21:28–04:57 | 7.5 | 0.0 | 77% | 46 |
| Tue 21 Sep | 21:24–05:01 | 7.7 | 0.0 | 67% | 53 |
| Wed 22 Sep | 21:19–05:05 | 7.8 | 0.0 | 56% | 60 |
| Thu 23 Sep | 21:15–05:09 | 8.0 | 0.0 | 44% | 67 |
| Fri 24 Sep | 21:10–05:13 | 8.2 | 0.0 | 33% | 74 |
| Sat 25 Sep | 21:06–05:16 | 8.3 | 3.2 | 22% | 85 |
| Sun 26 Sep | 21:01–05:20 | 8.3 | 5.5 | 13% | 90 |
| Mon 27 Sep | 20:57–05:24 | 8.5 | 7.7 | 6% | 93 |
| Tue 28 Sep | 20:53–05:27 | 8.7 | 8.7 | 2% | 94 |
| Wed 29 Sep | 20:49–05:31 | 8.8 | 8.8 | 0% | 95 |
| Thu 30 Sep | 20:44–05:34 | 9.0 | 9.0 | 1% | 96 |
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Questions
What are the best nights for the northern lights in Rovaniemi in September 2027?
The darkest, most moon-free nights are 30 Sep, 29 Sep, 28 Sep, 27 Sep, 26 Sep, 25 Sep. Nights average 6.8 hours of darkness in September.
Is September a good month for the northern lights in Rovaniemi?
Yes: equinox months often bring higher geomagnetic activity and milder weather. Get out of town light pollution: tours go to frozen lakes and forest cabins.