Northern lights in Tromsø in April
Possible, with patience — 15% of April nights offer a window.
15%of nights offer a window
2 hof darkness per night
97%of days with enough solar activity
15%of nights with a clear hour
The numbers behind it: April nights in Tromsø average about 2 dark hours, geomagnetic activity reaches local viewing levels on 97% of days, and 15% of nights offer at least one reasonably clear hour after dark.
The sky itself is the main obstacle in April — clouds spoil more nights than quiet solar activity does. Build in spare nights, and be ready to drive toward whatever gap the cloud forecast shows.
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.
April against the rest of the year
April elsewhere under the oval
- Yellowknife 59% of nights
- Fairbanks 42% of nights
- Reykjavík 24% of nights
- Rovaniemi 24% of nights
- Kiruna 22% of nights
- Lofoten Islands 19% of nights
- Abisko 13% of nights