This dataset includes the tridimensional modeled temperature and associated research data that support the results of the article "Comprehensive characterization of Marine Heatwaves in a coastal Northern Humboldt Current System regional model over recent decades". Specifically, it consists of three files (NetCDF format): i) Northern_MHWs.nc, this file contains the daily modeled temperature (from 2000 to 2019) within the northern domain of analysis (3-8°S) within the 250 km nearshore band for each vertical layer ranging from 0 to 250m depth. In addition, daily snapshots of MHW intensity are also included by depth. ii) Central_MHWs.mat, similar to the previous file, but for the central domain of analysis, from 8 to 13°S. iii) Southern_MHWs.mat, similar to the previous file, but for the southern domain of analysis, from 13 to 18°S.

The authors acknowledge the financial support of the Project Concytec - World Bank "Characterization and forecast of extreme events in the Peruvian sea using an operational system of oceanic information", through its executing unit Fondo Nacional de Desarrollo Cientı́fico, Tecnológico y de Innovación Tecnológica (Fondecyt). This work is a contribution to the cooperative agreement between the Instituto del Mar del Perú (IMARPE) and the Institut de Recherche pour le Developpement (IRD) through the IRD international network GDRI DEXICOTROP.