Canada, the world's second-largest country, exhibits extreme climate diversity due to its vast size spanning over 9.9 million km² from the Arctic Ocean to the U.S. border. Dominated by cold continental and polar climates, it features subarctic conditions across much of its territory, tundra in the north, and milder oceanic influences on the Pacific coast. Winters are long and harsh with heavy snowfall in most regions, while summers are short but can be warm, especially in the south. Recent Köppen-Geiger maps (1991-2020) show northward shifts in zones due to warming, with boreal forests expanding into former tundra areas. Precipitation varies from very low in the Arctic to high on western coasts, making regional adaptation essential for residents and expats seeking outdoor lifestyles or urban comfort.