Winters in southern Finland (when mean daily temperature remains below ) are usually about 100 days long, and in the inland the snow typically covers the land from about late November to April, and on the coastal areas such as Helsinki, snow often covers the land from late December to late March. Even in the south, the harshest winter nights can see the temperatures fall to  although on coastal areas like Helsinki, temperatures below  are rare. Climatic summers (when mean daily temperature remains above ) in southern Finland last from about late May to mid-September, and in the inland, the warmest days of July can reach over . Although most of Finland lies on the taiga belt, the southernmost coastal regions are sometimes classified as hemiboreal.