List of off-season Australian region tropical cyclones

The World Meteorological Organization currently defines the season as occurring between 1 November and 30 April, of the following year, which is when the majority of all tropical cyclones exist.

During the off-season, systems are more likely to either develop during or persist until May, with approximately 52% of such storms occurring during that month.

Off-season cyclones are most likely to occur in the Coral Sea, with most affecting land in some way.

The wind speeds listed are maximum ten-minute average sustained winds, while the pressure is the minimum barometric pressure, both of which are estimates taken from the archives of either Météo-France, the Australian Bureau of Meteorology, the Fiji Meteorological Service, and New Zealand's MetService.

The damage totals are the United States dollar of the year of the storm.

Cyclone Billy–Lila near peak strength off the western coast of Australia on 10 May 1986