North America Geography & Climate

North America's defining feature is its north-south spine: the Rocky Mountains run from Alaska down through western Canada and the United States before continuing as Mexico's Sierra Madre ranges, forming a mountainous backbone the entire length of the continent. East of the Rockies, the Great Plains stretch across the continental interior — some of the flattest, most agriculturally productive land on Earth — before rising again into the older, more worn-down Appalachian Mountains near the Atlantic coast.

The Great Lakes, holding roughly a fifth of the world's surface fresh water, sit at the US-Canada border and have shaped settlement, trade, and industry across the region for centuries. Further south, Mexico's geography grows more complex: the central highlands and their volcanic peaks give way to the Yucatán Peninsula's flat limestone shelf, riddled with underground rivers and cenotes rather than surface streams.

Coastlines vary just as widely — the rugged, fjord-cut coast of British Columbia and Alaska bears little resemblance to the long, flat beaches of the Gulf of Mexico or the volcanic Pacific coast of southern Mexico, giving the continent a genuinely different coastal character depending on where you are.

North America's size means it holds nearly every climate type that exists, often within a single country. Northern Canada sits in the Arctic and subarctic, with long, severe winters and a short summer; the interior plains of both Canada and the United States have a continental climate of hot summers and cold winters with limited moderating effect from any ocean.

The Pacific coast tells a different story — Vancouver and Seattle sit in a temperate maritime zone with mild, wet winters, while California further south shifts into a Mediterranean climate of dry summers and wet winters. The American Southwest and much of northern Mexico are arid to semi-arid desert, some of the driest inhabited land on the continent.

Moving further south into Mexico, climate becomes governed less by season and more by elevation and coastline — the central highlands stay mild year-round regardless of month, while the Yucatán and Pacific coastal lowlands are properly tropical, with a clear wet season (roughly June–October) rather than four traditional seasons at all.