Tropical cyclone activity was monitored by Météo-France office in Réunion, the Regional Specialized Meteorological Centre for the basin.

[3] Most systems during the season remained weak, with only three storms (Uriah, Emeraude, and Fantala) reaching at least tropical cyclone strength with winds of 120 km/h (75 mph), compared to the average of five.

MMS also indicated that the equatorial region to the north of Mauritius, east of Agaléga and west of Diego Garcia, could be significantly conducive for cyclone formation.

MFR also predicted that the motion of cyclones during the season would have a stronger meridional component than normal, having a tendency to track south quickly.

[4] On November 20, the system's organization continued to improve with tight convective banding and it was upgraded to moderate tropical storm status about 270 km (170 mi) south of Diego Garcia.

[14] Annabelle became a severe tropical storm early on November 23,[4] benefiting from strong upper level divergence aloft.

[4] By November 24, Annabelle's convection became disorganized as a result of increased wind shear induced by an upper level trough and cooler ocean temperatures and it was declared post-tropical.

[5] The tropical depression gradually turned to the south-southwest and exhibited weak convection, leaving the system exposed as it struggled to intensify within a dry air mass.

[17] It received the name Bohale from the Mauritius Meteorological Services early on December 11 when it was operationally determined to have become a moderate tropical storm.

[5] Bohale maintained its peak intensity of 65 km/h (40 mph) as a moderate tropical storm for 18 hours, before transitioning into a post-tropical depression at 18 UTC while retaining its gale-force winds.

[6] Corentin peaked later that day with 10-minute maximum sustained wind speeds of 110 km/h (70 mph) and a large, 110 km (70 mi) ragged eye.

[7] Daya accelerated to the southeast under the influence of the ridge and favorable poleward divergence allowed the system to peak with maximum sustained winds of 65 km/h (40 mph) early the next day.

[27] Uriah entered the South-West Indian Ocean basin as a moderate tropical storm from the Australian region on February 14, where it was previously monitored by the Bureau of Meteorology's office in Perth.

[8] Early on February 16, Uriah began to intensify steadily, turning to the west as a subtropical ridge built in to the south of the system.

[9] With favorable environmental conditions and a good poleward outflow channel, the storm rapidly intensified[31] into a tropical cyclone the next day.

[9] Under the influence of a strengthening near equatorial ridge located to its northeast, Emeraude's motion began to slow and turn to the east.

[33] The cyclone was quickly affected by increasing wind shear and decreased oceanic heat content induced by its slow movement, resulting in significant weakening.

[9] The system briefly weakened into a moderate tropical storm before restrengthening early the next day once it reached warmer waters.

[10] The disturbance intensified into a tropical depression and was pushed quickly to the southeast ahead of a trough, away from the British Indian Ocean Territory.

[38] With a ridge to the south, the storm moved westward for several days while gaining strength, aided by warm waters and decreasing wind shear.

The system weakened due to an eyewall replacement cycle, and a change of steering currents caused Fantala to reverse direction and accelerate southeast.

Fantala accelerated back northwest as a moderate tropical cyclone, with the JTWC and MFR issuing their final advisories on April 24.

[44] After dissipation, Fantala's remnant moisture affected Tanzania and Kenya, where heavy rains and flooding killed 13 people and left 13,933 homeless.