Northern Lights are the most spectacular colour show of northern nature. They are light phenomena appearing as colourful, dancing and quickly moving lights that change form, and can be viewed in the northern regions in dark and clear night skies. Northern Lights can be observed starting from the last week in August, when the nights start to darken. Northern Lights can be viewed through to mid-April, following which the nights become too bright to spot these light phenomena. The more north you travel, the more often you will see the Northern Lights, and they are often visible throughout the night. The Northern Lights (Aurora Borealis) are natural phenomena that can be forecasted on the basis of solar wind activity and of course the weather. These websites will help you estimate when the Northern Lights could be visible.