Northern lights in Tromsø in October
A solid choice — 33% of October nights offer a real viewing window.
33%of nights offer a window
11 hof darkness per night
95%of days with enough solar activity
35%of nights with a clear hour
The numbers behind it: October nights in Tromsø average about 11 dark hours, geomagnetic activity reaches local viewing levels on 95% of days, and 35% of nights offer at least one reasonably clear hour after dark.
Neither clouds nor solar activity dominates — October failures are usually bad single-night luck. Several nights in a row is the honest insurance policy.
Numbers come from 1996–2025 Kp records (GFZ Potsdam) and 2015–2024 hourly cloud history for Tromsø itself — the full method is on the methodology page. Travelling soon? Check tonight's live Tromsø forecast.
October against the rest of the year
- Jan32% of nights
- Feb27% of nights
- Mar29% of nights
- Apr15% of nights
- Maymidnight sun
- Junmidnight sun
- Julmidnight sun
- Aug3% of nights
- Sep28% of nights
- Oct33% of nights
- Nov26% of nights
- Dec21% of nights
September in Tromsø · November in Tromsø · full year overview
October elsewhere under the oval
- Yellowknife 41% of nights
- Fairbanks 39% of nights
- Lofoten Islands 36% of nights
- Kiruna 33% of nights
- Reykjavík 29% of nights
- Rovaniemi 24% of nights
- Abisko 16% of nights