The covers roughly the northern third of the continent, stretching from the Kimberley in Western Australia across the Top End of the Northern Territory to North Queensland . Unlike the four-season cycle common in southern regions, the Australian tropics are defined by two distinct periods: the Wet and the Dry . The Two Faces of the Tropical Year
While the entire north is "tropical," the climate varies significantly depending on proximity to the coast and specific geography: Australian climate zones | The Bureau of Meteorology - BoM tropical climate in australia