Tropical Depression Wilma, also referred to as 30W and Depression BOB 05 were a series of tropical cyclones that traveled from the Northwest Pacific Ocean to the North Indian Ocean in 2013. Forming east of Palau on November 1, the tropical depression passed through the Philippines on November 4 and emerged into the South China Sea on the next day. Without intensification, the system made landfall over Vietnam on November 6 and arrived at the Gulf of Thailand on November 7.

The 2013 Pacific typhoon season was the most active Pacific typhoon season since 2004, and the deadliest since 1975. It featured Typhoon Haiyan, one of the most powerful storms and one of the strongest landfalling tropical cyclones in history. It was an above-average season with 31 named storms, 13 typhoons, and five super typhoons. The season's first named storm, Sonamu, developed on January 4 while the season's last named storm, Podul, dissipated on November 15. Despite the activity, most of the first seventeen named storms before mid-September were relatively weak, as only two of them reached typhoon intensity. Total damage amounted to at least $26.41 billion (USD), making it at the time the costliest Pacific typhoon season on record; it is currently the fourth costliest, behind the 2018, 2019 and 2023 seasons.