2019–20 South-West Indian Ocean cyclone season (Sandy156)

The 2019–20 South-West Indian Ocean cyclone season was an event of the annual cycle of tropical cyclone and subtropical cyclone formation. The season began on 22 July 2019 with the formation of Zone of Disturbed Weather 01, however, the season officially began on 15 November. It ended on 30 April 2020, with the exception for Mauritius and the Seychelles, for which it ended on 15 May 2020. These dates conventionally delimit the period of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical and subtropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion.