Ihe ndị a na-eme ka mmiri ozuzo dị iche iche site n'afọ ruo n'afọ. Ọtụtụ n'ime akụkụ ugwu nke mba ahụ nwere mmiri ozuzo okpomọkụ, ọkachasị mmiri ozuzo n'oge ọkọchị (monsoon). Akụkụ ndịda ọdịda anyanwụ nke mba ahụ nwere ihu igwe Mediterenian. Ebe ndịda ọwụwa anyanwụ sitere na oke osimiri (Tasmania na Victoria dị n'ụsọ oké osimiri) ruo subtropical mmiri ozuzo (ọkara nke New South Wales), ebe ala dị elu na-egosipụta alpine na subpolar oceanic climates. Ọkọchị dị n'ime ala amalitela na ọkara mmiri ozuzo. Dị ka Ụlọ Ọrụ Meteorology nke Australia si kwuo, na 2010, oke mmiri ozuzo na-adịkarị n'ebe ndịda ọwụwa anyanwụ nke Australia.
Oké Osimiri Mediterenian