Aurora

Iceland Northern Lights Guide: When to Go, Where to Go, and What the Forecasts Mean

The aurora borealis is visible in Iceland from September through March when the sky is dark and solar activity is sufficient. It is genuinely unpredictable beyond 48 hours. A week-long trip gives a high probability of at least two or three good sightings. The difference between a green smear and a full-sky display is solar activity and clear skies — both outside anyone's control.

Henrik Vinter