Due to the high amount of snowfall, Geilo ski resort boasts a long ski season running from late November until early May. December through to February has the best snow conditions but be sure to wrap up warm.
Limited daylight hours are well publicised when it comes to Norway, however this is mainly confined to the North of the country. Further South In Geilo, you can expect very similar daylight hours to the UK and northern Europe. Geilo's floodlit skiing also lets you cram in as much skiing as your ski legs will allow, well into the evening.
March onwards offers up excellent snow conditions with longer days and very reliable snowfall.