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Advanced Weather Modelling

Advanced Weather Modelling

Theyr weather forecasts have been the professional mariners’ choice for over two decades. Today, the Theyr brand has become synonymous with accuracy by using advanced weather modelling technology. 

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Key Features

Using the most advanced weather modelling to produce the most accurate forecasts available today, GRIBview by Theyr provides you with:

  • The highest resolution weather forecasts built on super high-precision data from 10km down to 1km resolution on an hourly time step.
  • Free global forecast data for a highly compressed and very efficient overview of the oncoming weather.
  • One-click access to unrivalled granular and detailed forecast accuracy for your favorite sailing areas.
  • GRIB download functionality for further offline use during your maritime activities.
  • Free offline charts which don't require an Internet connection to view.

(Onboard internet or mobile data access required. Data charges from your carrier may apply.)

Our forecasts are used by many of the world’s best-known maritime organizations, businesses and professionals. From the most successful Olympic sailing teams and Americas cup teams to the biggest commercial names in the industry.

Visit the Theyr home page for more information.