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 and unofficially by the Joint Typhoon Warning Center.

Continuing the active period of development, Tropical Storm Dumako formed, struggling to intensify and making landfall in Madagascar later.

Finally, Jasmine formed near Comoros on 21 April before the landfall in Nampula and Zambezia province off the coast of Mozambique and rapidly intensified as Severe Tropical Storm.

On 20 January, the Joint Typhoon Warning Center began monitoring an area of convection approximately 378 nmi (700 km; 435 mi) from Mauritius, and gave a low chance for potential tropical cyclogenesis within the next 24 hours.

[3] Early the next day, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) for the system, as it consolidated a well-defined low-level circulation center (LLCC).

[20] On 23 January, the JTWC noted an area of convection over the eastern part of the basin, located approximately 493 nmi (913 km; 567 mi) from the Cocos Islands, and gave a low chance for potential tropical cyclogenesis.

[28] The system started to rapidly weaken after its eye quickly collapsed and the cloud tops had warmed, so the MFR downgraded it to a tropical cyclone.

[58] On 31 January, the MFR reported the formation of a weak area of low pressure east of Cyclone Batsirai,[59] which the JTWC recognized as Invest 90S at 08:00 UTC of 2 February.

[60] Two days later at 03:00 UTC, the JTWC issued a TCFA for the invest,[61] upgrading it to a tropical cyclone shortly after, noting the defined but obscured LLC.

[74] By 14 February at 00:00 UTC, MFR estimated Dumako to have peaked in intensity, with maximum 10-minute sustained winds of 85 kilometres per hour (50 mph) and a minimum central pressure of 993 hPa (29.32 inHg).

Environmental conditions were assessed as being marginally conducive for tropical cyclogenesis, with the disturbance being located about 420 nautical miles (780 km; 480 mi) south of Diego Garcia.

Due to cooler waters and very high wind shear, it began to transition into a subtropical cyclone, with the JTWC issued its final warning at 21:00 UTC on 24 February and MFR doing the same six hours earlier.

[86] During 16 February, the MFR reported that a low-pressure system which was labelled as Tropical Low 19U by the Australian Bureau of Meteorology entered the basin.

[89] However, three hours later, the JTWC cancelled its TCFA as the system started its subtropical transition,[90] with the MFR noting its convective structure weakening and being continuously sheared by 06:00 UTC.

[94] On 26 February, when Vernon entered the MFR's area of responsibility (AoR), it was assessed as an intense tropical cyclone on the SWIO scale, with maximum 10-minute sustained winds of 195 km/h (120 mph) and a central atmospheric pressure of 950 hPa (28.47 inHg).

However, by 2 March, it began to undergo subtropical transition as it entered lower latitudes, and the JTWC issued its final warning on 21:00 UTC of the same day.

[citation needed] Tropical Depression 08 initially formed on 23 February as a low-pressure area, which was located very close to Cyclone Vernon.

Its convection had decayed and its low-level center had become ill-defined as a result of the interaction,[99] and due to this, the JTWC had also stopped monitoring the invest on the next day.

[101] On 6 March, the MFR began to monitor a zone of disturbed weather located approximately 280 nmi (520 km; 320 mi) from Mauritius, moving northward.

[112] In the technical bulletin released on 17 March by the MFR, the agency noted that what was left of Gombe reorganized itself into a tropical depression in the Mozambique channel.

[117] At 18:00 UTC of the same day, the MFR released another technical bulletin, informing that the low pressure intensified into a Category 1 equivalent tropical cyclone.

On 12 April, the MFR designated the low as Subtropical Depression Issa, based on the system's structure and the presence of gale-force winds.

[123] Increased wind shear and dry air stripped away the thunderstorms near the center, weakening the storm, and causing the MFR to discontinue advisories on 13 April.

[131] Soon reaching its peak intensity, it began to encounter low sea surface temperatures as well as high wind shear and baroclinic forces which commenced its weakening.

[132] On 27 April 2022, the MFR released a final bulletin, informing that Jasmine had lost its tropical characteristics and was downgraded to a low pressure common on the high seas.

[137] On 5 May, the JTWC started to monitor the system, as it began organizing, with flaring deep convection wrapping to its broad low-level circulation center.

[138] With an environment of fair poleward outflow and warm sea surface temperatures offset by moderate wind shear, the system continued to organize, which led to the JTWC issuing a TCFA on the next day.

[146] New names this season are: Ana, Batsirai, Cliff, Dumako, Emnati, Fezile, Gombe, Halima, Issa, Jasmine, Karim, and Letlama.

They replaced Alcide, Bouchra, Cilida, Desmond, Eketsang, Funani, Gelena, Haleh, Idai, Joaninha, Kenneth, and Lorna after the 2018–19 season.