Worldwide Ocean and Sea Tide Predictions

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One API for the Entire World

We combine satellite telemetry, gauge data and harmonic analysis into a single, easy to use API to provide you with over 8000 locations around the world. Our sources include:
  • Center for Operational Oceanographic Products and Services
  • British Oceanograpic Data Centre
  • Australian Bureau of Meteorology
  • University of Hawaii
  • Puertos del Estado
  • Land Information New Zealand
  • Oregon State University / ModEM-Geophysics Inc
  • Canadian Hydrographic Service
  • and more...
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Rich Features

With over a billion predictions served, we understand what users want. Now developers can take take advantage of our experience and deliver quality data in just the right way to their own users.


Dozens of Datums to choose from including local Chart datums.

Tide Graphs

Tide Graph Plots make it easy to display professional graphs that automatically handle time zones and daylight saving time.

Time Zones

Full time zone names are included for each location. This elliminates the need to look up the time zone yourself. It also makes it easy to show the correct Daylight Saving time offset.
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Extremes or Samples

You can get High and Low Tides, Sampled data, or both.

Predict the Future

All predictions are available years in the future or past.
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