The present datasets include multispecies foraminiferal geochemical data (δ¹⁸O, δ¹³C, Mg/Ca), which was used to make seawater temperature and δ¹⁸O sw reconstructions for the Maldives Inner Sea across the Marine Isotope Stages (MISs) 1-2 and 10-13. All data comes from International Ocean Discovery Program (IODP) Site 359-U1467 samples. All data, other less otherwise indicated in the tables below, is new data generated in this study.