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Welcome to Weather4D

Wearher4D aims to offer a world weather. Through a simple and intuitive interface you watch your weather data in a 4-dimensional space.

Weather data types

  • Cloud cover
  • Precipitations
    • Rain
    • Snow
  • Wind 10 m above mean sea level
  • Temperature 2 m above mean sea level
  • CAPE
  • Waves (Height, Direction, Period)

Data model

  • Data from NOAA GFS model & FNMOC WW3 models
  • Forecasts up to 8 days
  • Data steps : 3hr, 12hr, 24hr
  • Worldwide Cover
  • Resolution : 0.5°, 1°, 2°
  • Data updated 4 times a day (every 6 hours)

Additional features of Weather4D Pro

  • Isochronous routing (sailing and motor)
  • Importation of polars from iPolar
  • GRIB file import
  • Historical GRIB files
  • Personal GRIB management
  • Sharing your GRIB files
  • SailDocs requests by Mail
  • Importing KML route file type to see the movement of the vessel during weather forecast Route based on an estimated speed and course
  • Dynamics meteogram on the target, along a route (kml imported) or for a estimated route
  • GRIB by Iridium satellite network
  • For more information, see the article by Francis Fustier here.


  • iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5
  • iPod Touch 3e & 4e generation
  • iPad 1, iPad 2, New iPad

New release : v1.3.2