​Different climates,

North of the Arctic Circle, part of winter is the period known as the "Polar Night", when the sun does not rise above the horizon at all. You can also enjoy the Nothern Lights.
In the summer the sun does not set at all. The northernmost parts of Finland have 73 such days every year. We call it the Midnight Sun or Polar Days.
Spring, summer, autumn and winter – each season is different in Finland. 
In the winter, northern Finland is covered by snow from November to April. In the south, the snow usually arrives in December, but not this year! In winter, temperatures of -20°C are not uncommon in Finland.
Spring can be rainy, but there is also something very special in the gradually increasing sunshine of early spring that brings with it melting snow and budding leaves, not to mention the arrival of birds.
Summer is warm and bright with almost 20 hours of daylight. The temperature often rises to +20 °C or more and sometimes it gets close to +30°C. 
Autumn can be very rainy. Autumn brings with it darkening days and cooling weather. It is also a season of beautiful colour when the leaves in the trees turn bright yellow, orange, and red.