There are multiple ways to access CeNCOOS data.
The primary ways is through the CeNCOOS Data Portal and its associated Data Catalog.
The data underlying data may also be access by ERDDAP or THREDDS.ERRDAP THREDDS
Due to the nature of the data these services contain different data. Model and gridded data are served by the THREDDS server and time-series data by the ERDDAP server.
ERDDAP documentation is available here.
These services are particularly useful for machine to machine data access.