Northern Japan, especially the island of Hokkaido, is home to some of the snowiest cities in the world. Sapporo, the island's largest city and host of an annual snow festival, typically sees more than 140 days of snowfall, with nearly six meters (20 feet) accumulating on average each year. The ski r esorts surrounding the city delight in the relatively dry, powdery "sea-effect" snow that often falls when frigid air from Siberia flows across the relatively warm waters of the Sea of Japan. ...read more read less