2004–05 South-West Indian Ocean cyclone season

The 2004–05 South-West Indian Ocean cyclone season was a near average season, despite beginning unusually early on August 30 with the formation of an early-season tropical depression. Météo-France's meteorological office in Réunion (MFR) ultimately monitored 18 tropical disturbances during the season, of which 15 became tropical depressions. Two storms – Arola and Bento – formed in November, and the latter became the most intense November cyclone on record. Bento attained its peak intensity at a low latitude, and weakened before threatening land. Tropical Cyclone Chambo was the only named storm in December. In January, Severe Tropical Storm Daren and Cyclone Ernest existed simultaneously. The latter storm struck southern Madagascar, and five days later, Moderate Tropical Storm Felapi affected the same area; the two storms killed 78 people and left over 32,000 people homeless. At the end of January, Severe Tropical Storm Gerard existed as an unnamed tropical storm for 18 hours due to discrepancies between warning centers.

After a series of weak tropical systems in February, there were two storms in March. Severe Tropical Storm Hennie brought heavy rainfall to the Mascarene Islands, and Severe Tropical Storm Isang remained away from land. The season's strongest storm originated in the neighboring Australian basin, developing in early April near the Cocos Islands. After being named Adeline by the Australian Bureau of Meteorology (BoM), the MFR renamed the storm Juliet once the storm crossed 90°E. Juliet would reach maximum sustained winds of 220 km/h (135 mph), making it a very intense tropical cyclone. Juliet damaged corn plantations on the island of Rodrigues before becoming an extratropical cyclone on April 11, thus ending the season.