Meteorologists have confirmed the emergence of a rare triple dip La Niña. This is the third consecutive year of unusually cool sea surface temperatures in the central and eastern Pacific Ocean and only the third occurrence since records began in 1950. While La Niña typically brings heavy rains to Australia, it often causes drought in East Africa by disrupting the Intertropical Convergence Zone (ITCZ). The current La Niña is being compounded by a persistent negative Indian Ocean Dipole (IOD), a rare back-to-back occurrence since reliable records began in 1960. A negative IOD shifts warmer waters eastward toward Australia, intensifying rainfall there but worsening drought in East Africa. Climate scientists warn that climate change may make both negative IOD and La Niña-like conditions more frequent. This could lead to more extreme and prolonged droughts. In Somalia, Kenya, and Ethiopia, the late arrival and poor performance of the 2022 deyr rains threaten an unprecedented fifth consecutive failed rainy season. Humanitarian agencies warn that the March to May 2023 long rains could also underperform, increasing famine risks. Urgent early action is needed to mitigate the growing humanitarian crisis in the Horn of Africa.