"The northern lights are elusive but we always do our best to show them to our visitors", says Stefan Helgi Valsson tourist guide in Iceland. "The lights can only be seen in winter from about 15 September until 15 April because it is simply too light all day and all night in summer. I regularly get asked if it is possible to see the lights in June. The answer is no because we have 24 hour daylight that time of the year".
Sighting cannot be guaranteed mostly either by cloud cover or inactivity.