The climate in Southern Finland is a northern temperate zone, especially in the province of Lapland.The climate is semi-arctic forests. Which is typically cold A harsh winter in some time. The summer is quite warm by comparison. Finland is influenced by the Gulf Stream currents because of the nearby Atlantic Ocean. The climate is relatively mild compared to much higher latitudes where the space around a quarter of Finland lies above the Arctic Circle. The midnight sun phenomenon. In the north of Finland. The sun does not set for 73 days during the summer. And not at all for 51 days during the winter.