ECMWF Seasonal forecasts (init 2026-01) are not on CDS

The ECMWF SEAS (system number 51) for Jan 2026 init is not available on the C3S datasets yet ( Seasonal forecast monthly statistics on single levels ), but the charts are available on the graphical products (e.g., Charts | Copernicus )

It’s usually updated by now, just wondering if it will update soon.

Thanks for your help!

Hi @Tristan_Jeffrey_Meyers

As described in the documentation, ECMWF contribution to C3S seasonal forecasts is released every month at 12UTC on the 6th.

Graphical products for all individual contributions (including ECMWF) and the multi-system are not released until the 10th of the month at 12UTC. In fact the link provided points to Jan 2026 forecast from December 2025 start, but as of today no SEAS5 graphical products from Jan 2026 start date are available from the C3S charts page.

I hope that sounds helpful.

Best regards!

Hey @Eduardo_Penabad ,

Thank you so much. I’ve realised the mistake I made, and thank you for pointing that out as well. So sorry to take up your time. Cheers, and thanks for everything as always.