Tromsø vs Reykjavík for the northern lights
On raw odds it is close to a dead heat — Tromsø averages 24% of nights across its season, Reykjavík 28%. Choose on logistics, scenery and price rather than statistics.
| Tromsø | Reykjavík | |
|---|---|---|
| Country | Norway | Iceland |
| Solar activity needed (Kp threshold — lower is better) | 1 | 2 |
| Season length (months with dark skies) | 9 | 9 |
| Best month | October (33%) | January (32%) |
| Season-average viewing nights | 24% | 28% |
| Clear-night share across the season | 25% | 36% |
Month by month
Two different trips
Tromsø — The aurora capital of the Arctic
Tromsø sits directly under the auroral oval, 350 km north of the Arctic Circle. Even on geomagnetically quiet nights the lights often appear overhead — the real question here is almost always the clouds, not the sun.
Reykjavík — Aurora over the land of fire and ice
Reykjavík sits just south of the auroral oval, so displays need a touch more geomagnetic activity than in Arctic Norway — but Iceland rewards you with volcanic foregrounds and easy self-drive escapes from city light.