The European Centre for Medium-Range Weather Forecasts (ECMWF) hosts a large amount of datasets on their Climate Data Store (CDS) platform. This includes various reanalysis datasets on a large number of weather phenomenon, as well as global forecasting products. The full list of available datasets can be found on their datasets page.
The dhis2eo.data.cds module contains convenience functions for downloading some of the datasets available from the CDS. See: