To provide basic hydrological data for sustainable management of south subtropical forest plantations, we measured rainfall, throughfall, stemflow and canopy interception in a 30-year old Pinus massoniana stand at Guangxi Youyiguan Forest Ecosystem Research Station from January to December 2018. The results showed that total annual rainfall was 1 303.6 mm, with throughfall, stemflow and canopy interception accounting for 60.9%, 0.4% and 38.7% of total rainfall, respectively. The minimum rainfall that produced throughfall and stemflow was 0.4 and 2.2 mm, respectively. Among the four rainfall factors (rainfall amount, rainfall intensity, rainfall duration, and interval time between two rainfall events), rainfall amount had the strongest effect on rainfall distribution pattern. Rainfall intensity and rainfall duration had a significant impact on throughfall, throughfall rate, stemflow, canopy interception, and canopy interception rate. Interval time between two rainfall events only had a significant impact on throughfall, stemflow, and canopy interception. Results of multiple linear regression analysis showed that the responses of the three components of rainfall partitioning to rainfall characteristics were not synchronized, with throughfall and canopy interception being more affected by rainfall characteristics than stemflow.