ADMIRALTY Tidal Prediction Service

ADMIRALTY Tidal Prediction Service allows you to choose, customise and purchase the current year (plus the subsequent two years' worth of data) from over 500 standard and secondary tidal stations around the UK, in a range of output formats.


ADMIRALTY EasyTide provides free access to tidal predictions for over 600 UK port locations.  Access 7 days tidal predictions, including lunar phases, for safer use of the sea.

UK Tidal API

The UK Tidal API gives developers access to accurate and reliable data from the country's largest network of tidal stations, allowing you to build tidal height and time predictions into your own applications. 

Both on beach

About Tidal data

As our reliance on the oceans as a source for economic growth increases, so too does the need for comprehensive and up-to-date marine geospatial data, so that we can make use of the marine environment in a responsible way.

Our UK tidal database contains height data from over 600 tidal gauges around the UK, making up the UK's largest network of tidal stations. The database also includes over 40 stations in the Environment Agency's UK National Tidal Network and stations from port authorities at many of the UK's primary and secondary ports.

This information can help to give a clear picture of coastal conditions around the UK to support a range of tasks, from choosing the best time to go surfing and sailing, to supporting marine infrastructure development.