If you want to have a chance at the northern lights and do not want to go in the winter, mid October till the end of the October still gives you daylight end the night without being 24 hours of darkness.
Northern Norway experiences complete darkness from around November to January.
Aurora in Norway
The tour offers a remarkable experience in the countryside vineyard around the volcano of Mount Vesuvius. As well as getting in touch with your inner self with the art of yoga.