The Forum is now available on the new Discourse platform and the existing content has been migrated where possible.

Please use this link:

You only need your ECMWF account (the same account used in this forum) to discuss and interact in the new platform.

Here you can find the new link to the information about the new CDS soon to be launched:

Once logged in, you can “watch” the topic in the new platform by clicking on the bell icon on the right of the original post. You will then receive notifications of every new reply in the topic.


  1. any changes foreseen for cdsapi?

  2. Is there any further update? I used to use this service on an AWS S3 bucket, but it has been fully retired:

    It would be great to see a similar approach taken at ECMWF, via an S3 bucket. Then I don't need to have jobs running just waiting in the queue.

    Thanks in advance!

    1. With Open-Meteo, I now started to redistribute ERA5 and ERA5-Land on AWS Open-data. Updated daily. For any time-series analysis, this works well.

      1. Ok that is great, I'll check it out. I think Open-Meteo is amazing btw (really, really amazing!!)

  3. How many days are still required to finish the migration? 

  4. The API is completely unusable. Such a disruption with no mitigation strategy is hard to believe.

  5. I totally support Marco Bacci's comment. This disruption is getting problematic.
    Can we expect some improvement before the migration?

  6. It would be nice to have more information about the migration.

    How many weeks are we talking when you say "This migration period will take weeks to complete"?

    There is any plan to mitigate the impact on the API?

    Are there any changes foreseen to the cdsapi? If yes, when the new tools are going to be released? How long will the old tools remain operational?

  7. I am encountering the same problem as the other users.

    Can we access the new API in the beta version?

    It would be helpful for us to get a head start on the migration process and avoid any disruptions on our end when the migration is complete.

    Could you please provide us with more information to assist us with the transition?