Lipid isotope data from South Pacific Convergence Zone sediment cores collected from five freshwater lakes on Tetepare and Rendova Islands in Solomon Islands, and Thion Island in Vanuatu. The hydrogen isotope composition of the dinoflagellate biomarker dinosterol is inversely correlated with mean annual precipitation rates and provides 500-to-1000-year records of pre-instrumental precipitation variability from the western portion of the SPCZ Age. d2Hdinosterol from 5 cores (Rendova_SHAR1UC2, Tetepare_SBARUC2, Tetepare_STAVUC4, Thion_VTRUC3, Thion_VTRWUC2), as well as d2Hfattyacids, d2Halkanes, and alkane ratios from 1 core (Thion_VTWUC2). The parameters "Precipitation" and "Precipitation, standard error" are calculated from the d2Hdinosterol using the calibration generated from 44 core-top samples from 22 lakes throughout the SPCZ and the Global Precipitation Climatology Project (GPCPv2.3) gauge and satellite observations dataset (see Maloney et al. (2019)