The strongest system of the season was Cyclone Bingiza, which attained peak winds of 160 km/h (100 mph) off the northeastern coast of Madagascar in February.

Moderate Tropical Storm Cherono developed in March and traversed much of the ocean, only brushing by the island of Rodrigues.

The final system was a subtropical depression that intensified south of Madagascar, becoming extratropical on 16 April to end the season.

[1] At the end of December, the MMS issued an updated seasonal outlook, predicting that only 6–8 named storms would develop.

[4] Météo-France's meteorological office in Réunion (MFR) – the official Regional Specialized Meteorological Center for the South-West Indian Ocean – tracked and named all tropical cyclones from the east coast of Africa to 90° E.[5] The Joint Typhoon Warning Center (JTWC), which is a joint United States Navy – United States Air Force task force that issues tropical cyclone warnings for the region,[6] also issued advisories for storms during the season.

[7] For two days toward the end of October, an area of convection persisted within the equatorial trough, east-southeast of the Chagos Archipelago.

[15] On 23 November, an area of convection persisted southwest of Sumatra within the Intertropical Convergence Zone (ITCZ), accompanied by a poorly-defined circulation.

[16] Initially the system remained nearly stationary, although it began drifting to the southwest due to a weakness in the subtropical ridge.

[22] Despite the circulation being exposed from the thunderstorms, the MFR upgraded the disturbance to a depression on 30 November,[23] and further to Moderate Tropical Storm Abele on 1 December.

[40] That day, the JTWC issued a Tropical Cyclone Formation Alert based on the improved appearance on satellite imagery.

[41] At around 05:00 UTC on 16 January, the remnants of the depression struck Madagascar near Fenoarivo Atsinanana,[42] and the system rapidly dissipated over land.

It emerged into the Mozambique Channel as a weak tropical disturbance, but almost immediately turned southward and moved ashore western Madagascar.

[4] In Vinanivao, located along the Masoala peninsula, the cyclone destroyed half of the buildings as well as the roads and bridges, leaving it only accessible by boat.

[48] The high winds caused heavy crop damage, including to rice and banana, which left minimal food supplies in some areas.

[4] The storm's outer circulation also dropped heavy rainfall in the Comoros, peaking at 770 mm (30 in) in the capital Moroni, and increased moist air over Malawi, Mozambique, and Tanzania.

[4] On 10 March, Tropical Low 23U developed in the Australian basin southwest of Sumatra, and proceeded to move west.

[53] At 21:00 UTC on 19 March, the storm passed about 40 km (25 mi) south of Rodrigues island, producing winds of 31 km/h (20 mph).

[63] Two days later, convection increased over the center while located about 40 km (25 mi) southeast of Tôlanaro, Madagascar, which recorded a drop in atmospheric pressure.

[65] On 13 April, the MFR reclassified the system as Subtropical Depression 09, about 360 km (220 mi) southeast of Fort Dauphin.

The system's asymmetric structure – the strongest winds were located in a convective rainband to the south of the center – resulted in the subtropical designation.

[69] Increased wind shear disrupted the convection, causing the storm to transition into an extratropical cyclone on 16 April.

[63] The monsoon spawned a mesoscale convective system near Réunion on 28 January, with a weak circulation forming near the south coast of the island.

[73] However, the system soon weakened after it encountered cooler waters and stronger wind shear, and the MFR discontinued advisories early on 31 January.

[75] On 14 February, a weak low was present north of Rodrigues island with disorganized convection due to easterly wind shear.

The system moved westward over an area of warm water temperatures,[83] and after crossing 90ºE into the basin, the MFR classified it as Tropical Disturbance 08 on 29 March after the convection organized more.

[85] However, poor inflow and unfavorable wind shear prevented the system from organizing,[86] and the MFR discontinued advisories on March 31 after the circulation remained exposed from the convection.