The dataset ‘Future projections of the hydrology of the Philippines’ provides climate change scenarios from 1980-2089 using UKCP18 scenarios RCP 2.6 and RCP 8.5 run through the Philippine National Hydrological model. Each relative concentration pathway (RCP) scenario contains 15 ensemble members, and we present a total of 30 model runs from 1980-2089. The model simulates evapotranspiration, runoff, infiltration, soil moisture, river baseflow and groundwater levels. Aggregated variables at a monthly time interval are provided in this dataset in NetCDF format for each RCP and scenario or aggregated to provincial level in csv format. The provincial levels are based on the first level subdivisions from GADM (https://gadm.org/maps/PHL_1.html).