Most of Finland has a subarctic climate but the southern part has a humid continental climate. Temperatures are comparatively mild for its latitude because of the moderating influence of the North Atlantic Current, Baltic Sea, and more than 60,000 lakes. Finland has four very distinct seasons, but on average the winter is really dominant and year is really cold and dark all over the country. From November to March, and sometimes even till April, the thermometer is often below zero Celsius and -20 Celsius is nothing special during February. In Sodankylä (in Lappi) has had -40 degree Celsius and below several times in the last 10 years. The summer is really short, lasting about 2-3 months and is usually at 15-25 Celsius depending on the location. Finland has three main kinds of weather, the coastal weather and the inland weather and the north weather. The coastal weather (especially the area between Vaasa-Turku-Helsinki) is a lot windier and warmer than the inland and the north weather (pretty much everything north from Oulu) is a lot colder and darker for longer period of time.