Northern lights in Tromsø in September 2027
Short answer: The darkest, most moon-free nights are 29 Sep, 30 Sep, 28 Sep, 27 Sep, 26 Sep, 25 Sep. Nights average 5.6 hours of darkness in September.
Under the auroral oval; most clear nights from September to March show some aurora. Coastal weather changes fast, so chase tours drive to clear skies.
Wed 1 Sep to Thu 30 Sep 2027
Darkest night: Wed 29 September 2027
Dark 20:31–04:43 · 8.3 h without the moon · moon 0% lit
| Night of | Dark (sun below −12°) | Hours | Moon-free | Moon | Score |
|---|---|---|---|---|---|
| Wed 1 Sep | 00:10–01:23 | 1.3 | 1.3 | 2% | 61 |
| Thu 2 Sep | 23:49–01:43 | 2.0 | 2.0 | 7% | 64 |
| Fri 3 Sep | 23:34–01:58 | 2.5 | 2.5 | 13% | 66 |
| Sat 4 Sep | 23:21–02:10 | 2.8 | 2.8 | 21% | 68 |
| Sun 5 Sep | 23:10–02:20 | 3.3 | 3.3 | 31% | 70 |
| Mon 6 Sep | 23:00–02:30 | 3.7 | 3.7 | 41% | 72 |
| Tue 7 Sep | 22:50–02:39 | 3.8 | 3.8 | 51% | 72 |
| Wed 8 Sep | 22:42–02:47 | 4.2 | 4.2 | 61% | 74 |
| Thu 9 Sep | 22:33–02:54 | 4.5 | 4.5 | 70% | 75 |
| Fri 10 Sep | 22:25–03:02 | 4.7 | 4.7 | 78% | 76 |
| Sat 11 Sep | 22:18–03:09 | 5.0 | 4.8 | 85% | 76 |
| Sun 12 Sep | 22:10–03:15 | 5.2 | 1.8 | 91% | 46 |
| Mon 13 Sep | 22:03–03:21 | 5.3 | 0.0 | 96% | 26 |
| Tue 14 Sep | 21:57–03:28 | 5.7 | 0.0 | 99% | 26 |
| Wed 15 Sep | 21:50–03:33 | 5.8 | 0.0 | 100% | 26 |
| Thu 16 Sep | 21:44–03:39 | 6.0 | 0.0 | 99% | 27 |
| Fri 17 Sep | 21:37–03:45 | 6.2 | 0.0 | 96% | 30 |
| Sat 18 Sep | 21:31–03:50 | 6.3 | 0.0 | 92% | 33 |
| Sun 19 Sep | 21:25–03:56 | 6.7 | 0.0 | 85% | 38 |
| Mon 20 Sep | 21:19–04:01 | 6.8 | 0.0 | 76% | 44 |
| Tue 21 Sep | 21:13–04:06 | 7.0 | 0.0 | 66% | 50 |
| Wed 22 Sep | 21:08–04:11 | 7.2 | 0.0 | 55% | 57 |
| Thu 23 Sep | 21:02–04:16 | 7.3 | 0.0 | 44% | 64 |
| Fri 24 Sep | 20:57–04:20 | 7.5 | 0.0 | 32% | 71 |
| Sat 25 Sep | 20:51–04:25 | 7.7 | 1.8 | 22% | 80 |
| Sun 26 Sep | 20:46–04:30 | 7.8 | 4.8 | 13% | 88 |
| Mon 27 Sep | 20:41–04:34 | 8.0 | 7.2 | 6% | 91 |
| Tue 28 Sep | 20:36–04:39 | 8.2 | 8.2 | 2% | 92 |
| Wed 29 Sep | 20:31–04:43 | 8.3 | 8.3 | 0% | 93 |
| Thu 30 Sep | 20:26–04:48 | 8.5 | 8.5 | 1% | 93 |
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Questions
What are the best nights for the northern lights in Tromsø in September 2027?
The darkest, most moon-free nights are 29 Sep, 30 Sep, 28 Sep, 27 Sep, 26 Sep, 25 Sep. Nights average 5.6 hours of darkness in September.
Is September a good month for the northern lights in Tromsø?
Yes: equinox months often bring higher geomagnetic activity and milder weather. Under the auroral oval; most clear nights from September to March show some aurora. Coastal weather changes fast, so chase tours drive to clear skies.