The best time to visit the Svalbard and Jan Mayen islands is during the time of summer. The months from April to June are the best choice. This is the time when you can get clear skies and sunlight. Yes since this is such a northern place you get darkness for a few months and then sunlight for a few. Make sure you visit during the summer so that you can experience and the see the island groups to the fullest. The tourists pour in during this time. However you will not feel crowded since Svalbard and Jan Mayen islands is quite an offbeat place. You don’t have to worry about crowded streets yet you won’t feel like you are alone too.