⇒Winter is the coldest season of the year in polar climates and temperate climates, between autumn and spring.
⇒It comes after rainy season.
⇒Migration of birds can be seen during this season.
⇒Winter in either the Northern Hemisphere or the Southern Hemisphere is caused by the axis of the Earth in that hemisphere being oriented away from the Sun.
⇒The season which usually lasts about three months.