The transitions between the phases of the El Nino-Southern Oscillation (ENSO) are abrupt changes in the Sea Surface Temperature (SST) conditions, which lead to opposite SST anomalies from the boreal winter of one year to the next boreal winter. In this work, we studied the influence of these transitions of ENSO over the general circulation and three Low-Level Jets (LLJs) over northern South America. We carry out a composite analysis of seasonal anomalies for climatic variables such as SSTs, vertical wind speed, precipitation, water vapor transport, and low-level winds to evaluate changes in the hydroclimatic features. We found that the ENSO phase transitions may induce changes in the vertical wind speeds associated with the Walker cells over the far-eastern Pacific Ocean, which gradually increases (reduces) their downward velocities during the transition from El Niño to La Niña (La Niña to El Niño), and increases(reduces) their upward velocity over northern South America. During the El Niño to La Niña transition (La Niña to El Niño), we found that the low-level water vapor transport changes over the zones of the Caribbean LLJ, the Orinoco LLJ, and the Chocojet with distinctive patterns during the transition years. Moreover, we found a precipitation dipole around the latitude 5°N over the far-eastern Pacific ocean (western Colombian coast) that persists throughout JJA and SON, especially for the El Niño to La Niña transition whereas negative precipitation anomalies predominate over the continental territory of northern South America during the La Niña to El Niño transition. This work contributes to the characterization of ENSO during its abrupt transitions and provides new information about the effects of those transitions on tropical hydroclimatology, which can be used to improve diagnosis, analysis, and modeling of the influence of ENSO over the far-eastern Pacific and northern South America.