How many years of winter did the White Witch cause in Narnia?

The White Witch caused 100 years of winter in Narnia. When Lucy first enters the land through the wardrobe, she finds it trapped in perpetual snow and hears that it is always winter but never Christmas.

The witch is Jadis, who has seized control of Narnia and uses her magic to suppress its natural seasons. Her rule is not simply a period of cold weather: it is a supernatural winter designed to keep the land fearful, isolated, and permanently under her control. The arrival of the Pevensie children coincides with signs that her power is beginning to weaken.

The century-long winter is also part of the book's mythic atmosphere. Lewis drew on older traditions of an unnatural or world-threatening winter, including the Norse idea of Fimbulwinter. Readers sometimes confuse the duration with Narnia's broader timeline, which contains thousands of years of history; the witch's winter itself lasts a century.