Southern Finland is predominantly a northern temperate climate, while Northern Finland borders on a sub-arctic climate with cold and occasionally severe winters. Despite its latitude, Finland is surprisingly warm due to the Gulf Stream current from the Atlantic and other bodies of water, which act as a moderating influence on the climate. This somewhat temperate climate invites travelers to explore the region on a Finland cruise. Summers are sunny, particularly in the Baltic southwest coast, with temperatures ranging between 55°F and 71°F in July. Rain is mild in the summer, and become like sleet in the winter.