This study analyzed gridded precipitation data of the Asian Precipitation Highly-Resolved Observational Data Integration Towards Evaluation data set over the Indochina peninsula during the boreal winter (December to February) from 1951 to 2007 to demonstrate its variability. The empirical orthogonal function (EOF) technique was employed. The first mode of EOF analysis accounts for about 42.6% of the total variance. The temporal variation signal of the leading mode representing the variability shows interannual variation, and the corresponding spatial pattern shows large changes in magnitude over the southern part and the eastern coast of the Indochina. The variability was examined to reveal its correlation to the sea surface temperature (SST) that indicates the relationship between rainfall variability and SST in the Pacific Ocean.