[17] After meandering slowly to the west and northwest for several days with little change in strength, the system began to take a more southerly track and at 06:00 UTC on 6 December was upgraded to Tropical Disturbance 03 by MFR as the low level circulation became tighter and convection consolidated near the center.

[18] On 7 December, the disturbance intensified into Moderate Tropical Storm Bongoyo as an ASCAT pass revealed gale-force winds on the southern half of the circulation.

[23] On 18:00 UTC on 9 December, Bongoyo finally weakened back down to a moderate tropical storm after maintaining its strength for over a day while convection became sheared away from the circulation.

[25][26] On 19 December, RSMC La Réunion began monitoring a zone of disturbed weather situated approximately 830 km (515 mi) southwest of Diego Garcia.

[46] On 17 December, RSMC La Réunion began monitoring a sheared low-pressure area located in the far northeastern corner of the basin, about 1,250 km (775 mi) west-northwest of the Cocos Islands.

[48] At the time, the system's central atmospheric pressure was estimated at 1005 hPa (29.68 inHg) and satellite scatterometer data from just after 02:00 UTC on 18 December indicated maximum 10-minute sustained winds of up to 55 km/h (35 mph) in the disturbance's northern semicircle.

[48] Environmental conditions were assessed as being marginally conducive for tropical cyclogenesis, with warm sea surface temperatures near 30 °C (86 °F) and low vertical wind shear, but only weak outflow in the upper troposphere.

[54] It gradually organized over a sheared but moist environment for the next several days before eventually strengthening into Moderate Tropical Storm Danilo at 12:00 UTC 1 January.

[58] Around the time of reaching peak strength, Danilo continued to absorb what remained of Tropical Depression 05, which was inflicting some southeasterly wind shear on the storm.

[59] Danilo re-strengthened by the end of the day as 05 had been completely absorbed, regaining severe tropical storm strength at 06:00 UTC 5 January under an improvement in surrounding environment conditions peaking with winds of 100 km/h (60 mph) and a pressure of 981 hPa.

[60] A sudden increase in northerly shear, lack of outflow, and an interaction with the subtropical jet caused Danilo to take a sharp turn to the west and weaken to a moderate tropical storm.

[81]On 16 January, Météo-France La Réunion (MFR) first noted the presence of a tropical low in the Australian region which was expected to strengthen as it passed 90°E into the South-West Indian Ocean.

[89] A short time after entering the basin, Météo-France La Réunion (MFR) issued their last warning on 12:00 UTC 28 January as the system had become highly disorganized.

[97] The cyclone's eye quickly became more pronounced on infrared satellite imagery while Faraji drifted over waters with high ocean heat content, and low vertical wind shear, indicating more strengthening had occurred.

[108] Faraji weakened to a moderate tropical storm as it slowly headed southwest, displaying a typical sheared satellite appearance early on 13 February.

[119] Over the next several hours, Guambe began undergoing rapid intensification, with a well-defined central dense overcast configuration developing, as the cyclone continued organizing.

[120] Guambe quickly reached tropical cyclone status at 06:00 UTC on 19 February, with the appearance of a very small eye on infrared satellite imagery and a well-defined core structure.

[122] Despite forecasts of further strengthening, Guambe rapidly weakened back down to severe tropical storm status on 20 February due to an eyewall replacement cycle.

[124] Soon afterward, Guambe's structure decayed further with the rainbands unraveling and warming cloud tops, caused by high wind shear and cool sea surface temperatures.

[126] At 06:00 UTC on 1 March, Severe Tropical Cyclone Marian entered the area of responsibility of Météo-France La Réunion (MFR) after crossing the 90th meridian east from the Australian region.

[127] At the time, the system was assessed as a Category 3 severe tropical cyclone on the Australian scale, with maximum 10-minute sustained winds of 150 km/h (95 mph) and a central atmospheric pressure of 964 hPa (28.47 inHg).

[130] After a plateau in intensity lasting for more than a day, marked by an eyewall replacement cycle and periodic waxing and waning of deep convection around the core,[131][132] Marian began to strengthen again on 2 March.

The storm's strengthening trend slowed down, but it maintained a very well-defined pinhole eye and compact core structure, while the JTWC assessed Habana as having 1-minute sustained winds of 230 km/h (145 mph) at the time, equivalent to a mid-level Category 4 hurricane.

[155] Over the next 2 days, as wind shear quickly became unfavorable and relative humidity decreased significantly, the storm began to rapidly weaken whilst falling below tropical cyclone intensity on 14 March with a partially exposed low-level circulation center.

On 23 March, Météo-France La Réunion (MFR) first noted that the development of a closed low southwest of Diego Garcia was possible under the influence of north-westerly winds being enhanced by the equatorial side of a regenerating monsoon trough.

[174] By 26 March, the system had developed a broad closed low level circulation with a curved band pattern but was namely struggling due to moderate wind shear.

[185] The very small system further strengthened, earning the name Jobo at 18:00 UTC that day as it reached moderate tropical storm strength about 215 km (133 mi) north-northeast of Andranovondronina, Madagascar.

[189] Jobo continued to be negatively effected by northwesterly wind shear, weakening to a moderate tropical storm on 22 April as its structure became increasingly disorganized.

[190] Between late on 22 April–23 April, Jobo began to re-strengthen with development of a small central dense overcast as wind shear leveled off slightly,[191] but soon it became even more disorganized due to dry air.

[195] As Jobo approached Tanzania, weather forecasts brought the storm track increasingly close to the highly populated city of Dar es Salaam.