Which month does northern lights appear?

The northern lights, or aurora borealis, are most commonly visible between September and April, with peak activity occurring during the winter months. The best chances to see them are often in the colder, darker months when the nights are longest. Locations with minimal light pollution, such as northern regions of Norway, Sweden, Canada, and Alaska, provide optimal viewing conditions. However, the phenomenon can occasionally be observed outside this timeframe during periods of heightened solar activity.