Upwelling plays an important role in the physical processes and biological variability of coastal regions. Using 40-year-long hydrographic and climate data, the remote impacts of low-latitude oceanic climate on the upwelling along the east coast of Korea were investigated. During El Niño, the development of anomalously enhanced anti-cyclonic circulation over Northwestern Pacific resulted in relatively strong (~1.1 m s-1) southerly winds, compared to La Niña. During El Niño, the mean upwelling index was 402±106 kg m-1 s-1, and 10℃ isotherm was located at a depth of 32.7 m. During La Niña, they were 368±95 kg m-1 s-1 and 39.9 m, respectively. During El Niño, in the approximation, the offshore Ekman transport by wind-induced upwelling and the vertical transport by isotherm were higher than those during La Niña. This finding can be explained by the increased sea surface height difference, the subsequent enhanced geostrophic current, and the decrease in onshore sea surface temperature during El Niño. The strong (weak) upwelling tended to be more prevalent during periods when El Niño (La Niña) and Pacific Decadal Oscillation were in phase. These results suggest that low-latitude climate change could affect the coastal upwelling in the mid-latitude marginal sea through teleconnection.