Australia is an island, but its surrounding oceans act differently. The warm waters of the Coral and Timor Seas fuel tropical cyclones (called "cyclones," not hurricanes) that batter the northwest coast between November and April. The cold, northward-flowing current off the west coast of Tasmania helps keep that island cool.

Australia’s climate is not just diverse; it is dangerous. The continent is uniquely prone to:

This affects rainfall in southern and central Australia. A positive IOD (warmer water in the western Indian Ocean) tends to suppress winter rain over Australia, worsening drought, while a negative IOD brings wetter conditions.

Because Australia lies in the Southern Hemisphere, the calendar is flipped for Northern Hemisphere visitors:

Climatologists typically divide Australia into three primary zones, dictated largely by latitude and geography: