Theyr Precision Weather Forecasts

The RYA has teamed up with Theyr to offer RYA members the FREE GRIBView app, and 20% savings on Standard or Premium (high-precision data) subscription plans. A single subscription provides access to all Theyr apps; mobile, web and desktop software.

Theyr has been on the forefront of voyage planning for several years now -  their services favoured by maritime professionals and hobby mariners alike. Delivering high-definition weather and ocean forecasts Theyr provides data to many of the world’s best known maritime organisations, companies and brands. The GRIBView software is available on desktop, mobile devices (Android and iOS) and compatible for Raymarine MFD’s as well.

Standard subscription includes 1-10 day forecasts providing a model of resolution 1.0° to 0.1° /10 km. Parameters include wind speed and direction, wave height and direction, MSLP, sea surface temperature and more.

Premium subscription includes 1-10 day forecasts, min. Resolution 0.01°/1km,  all standard features with extras such as high resolution ocean current, tidal current, humidity, cloud, visibility and more.

Why subscribe?

  • Up to 17 different meteo-types
  • Ultra-high resolution regional forecasts
  • Up to 4 forecast updates per day
  • 12 supported maps
  • Free forecast data and downloads
  • Choice of olympic sailors and professionals


GRIBview mobile provides free and unlimited GRIB downloads of GFS data at one-degree resolution, and high-resolution data down to one kilometre resolution via the Premium subscription plan.

Why subscribe?

  • Precise voyage planning
  • Safety at sea
  • Racing advantage
  • High-resolution data
  • Offline functionality

All Members - 20% off a standard and premium subscription to Theyr; Digital Precision Weather

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