ERA-Interim production stopped on 31st August 2019
For the time being and until further notice, ERA-Interim (1st January 1979 to 31st August 2019) shall continue to be accessible through the ECMWF Web API. Keeping in mind that ERA-Interim is published with an offset of about three months from the dataset's reference date, ERA-Interim August 2019 data will be made available towards the end of October 2019.
ERA5 is now available from the Climate Data Store (CDS) (What are the changes from ERA-Interim to ERA5?) and users are strongly advised to migrate to ERA5 (How to migrate from ECMWF Web API to CDS API).
The offline data volume of ERA-Interim is about 100TB for the period 1979 to 2015, including all parameters, level types and forecast and analysis. ERA-Interim is produced on an ongoing basis, so the data volume keeps increasing.
Please refer to the ERA-Interim daily retrieval efficiency documentation for best practices in retrieving ERA-Interim data.