Available here and including: MSLP charts, SST maps and NINO-index timeseries, 2m Temperature charts, 850mb Temperature charts, Geopotential height at 500Pa charts, Precipitation charts. The forecasts are updated every month and cover a time range of 6 months.
C3S Seasonal forecast archived data
Available through the Climate Data Store (download over the web or via the CDS-API)
WATERSector: End-to-end Demonstrator for improved decision making in the water sector in Europe (EDgE) and Service for Water Indicators in Climate Change Adaption (SWICCA)
ENERGY Sector: European Climatic Energy Mixes (ECEM) and CLIM4ENERGY
INSURANCE Sector: Wind Storm Climate Service (WISC)