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FREE GRIB Files from GMN Marine Weather Services



GRIB Coverage Global Marine Networks (GMN), the leader in marine weather services, now offers 7 day wind forecasts of the world as a free public service via its GRIB Mail Robot. These forecasts are generated daily at 0015, 0615, 1215, 1815 GMT for every region of the world. GRIB forecasts are based on the National Weather Service, NOAA, Wave Watch III model yielding highly accurate forecasts every 6 hours for up to 7 days into the future. All GRIB forecasts are available via download or delivered by e-mail and optimized specifically for low bandwidth wireless connections.

The GRIB files provided here are derived from the NOAA MMAB Operational Wave Model (wwave3) which is considered to be the best model available for computer generated ocean surface weather forecasts. The user assumes any and all risk associated with the use of these GRIB files.

You must have a way to view these GRIB files. We recommend GRIB Explorer or WindPlot by Xaxero for viewing GRIB files.

Please note: there is no technical support provided for Free GRIB files.

NEW!  access-free-grib-files-with-your-ipod

FREE GRIB File Instructions via Email

Please read Free GRIB File Instructions for complete information on receiving GMN's Free GRIB weather files via e-mail. Email gmngrib@globalmarinenet.net for information and instructions on how to receive Free GRIB forecasts by email.

If you will be requesting these files by email over a satellite connection, we recommend you use GMN's XGate Wireless Email Solution. With its compression technology and mid-file restart you will realize significant airtime savings.

GRIB File Weather Forecasting

Need to know more about weather forecasting with GRIB files? Check out Chris Parker's Coastal and Offshore Weather, the Essential Handbook


If you are unfamiliar with GRIB, read What's a GRIB a short story on GRIB files.


Marine Weather Services

For the most comprehensive and easy to use marine weather service available, please see GMN Favorite Marine Weather Package. It includes WeatherNet and GRIB Explorer and a virtual weather data card.

WeatherNet - Weather on Demand

The cornerstone of each GMN Marine Weather Package, WeatherNet offers highly compressed text, images, charts, buoy data, radar, GRIB files, and many more formats. With over 20,000 conveniently indexed, continuously updated weather products, WeatherNet is the largest most comprehensive source of weather data in the world...and the easiest to use! Designed to optimize the download of weather and ocean data via satellite phone and other wireless connections, geographically indexed data is available to you, on demand, by the push of a button.

GRIB Explorer Software

GRIB Explorer software comes with every GMN Marine Weather Package. GRIB data includes surface pressure, wind, waves, swell, cloud cover, precipitation, sea temperature, ocean currents, salinity, even sub-surface temperatures and mixed layer depths. Unleash the power of GRIB weather data with this sophisticated GRIB file viewer with a simple user interface.

MetMapper Software

MetMapper transforms weather maps, satellite images, and ocean charts into interactive elements that carry a map overlay. This allows you to more deeply analyze the weather or ocean charts. This software program offers to all non-GRIB data what GRIB Explorer software does for the GRIB data.

Ocean Bathymetry

Offering digital bathymetry data that provides a startlingly reliable rendering of offshore ocean depths, add ocean Bathymetry to GRIB Explorer or MetMapper software. Relate sea surface heights and temperatures to ocean ridges and valleys. Find ocean shelves and slopes. Bathymetry software includes your choice of one of the six ocean regions. Upgrades to include all six regions are available.

MacWX - Weather on Demand

MacWX is the Mac version of WeatherNet - a system designed to optimize the download of weather and ocean data products. WeatherNet offers highly compressed text, images, charts, buoy data, radar, GRIB files, and many more Mac compatible formats. With over 20,000 conveniently indexed, continuously updated weather products, WeatherNet is the largest most comprehensive source of weather data in the world...and the easiest to use!

MacENC - GRIB Viewer and Marine Navigation & Charting

MacENC is THE GRIB file viewer for the Mac user. In addition to its excellent GRIB viewing features, MacENC is also the professional solution to marine navigation for those with an Apple Macintosh PC onboard.

WindPlot by Xaxero

WindPlot is a simple to use yet powerful GRIB viewer that will display most available GRIB types.


NEW! 3 Minute Audio How to Download Free Grib Files with an iPod App over Iridium Satellite Phones. Click Here to listen now.


Download FREE GRIB Files

The following is a list of supported regions. Click on the KEY to download a compressed 7 day wind forecast for the selected region. NOTE: Internet Explorer users will need to right click the appropriate link and select "Save Target As.." to download the file.

To view GRIB files you will need the following:
  • A program to uncompress the GRIB files (they are in bzip2 format).
  • A GRIB viewer - visit our downloads page for GRIB viewer options.
For viewing GRIB files we recommend GRIB Explorer.

Key Description
Pacific Pacific Region Forecast Data (includes Gulf of Alaska data)
Atlantic West Atlantic (US) Region Forecast Data
Canada East Canada Region Forecast Data
Caribbean Caribbean Basin and Gulf of Mexico
Drake Drake Passage
East Atlantic East Atlantic Region Forecast Data
Great Lakes Great Lakes Region Forecast Data
North Europe North Europe Region Forecast Data
Argentina Chile, Argentina Region Forecast Data
South Africa South Africa Region Forecast Data
Brazil Brazil Region Forecast Data
New Zealand New Zealand Region Forecast Data
Mediterranean Mediterranean Region Forecast Data
Scandinavia Scandinavia Region Forecast Data
Barents Barents Sea Region Forecast Data
Baffin Baffin Bay Region Forecast Data
WAlaska West Alaska Region Forecast Data
Vancouver Vancouver Region Forecast Data
Central N Pacific Central North Pacific Region Forecast Data
Central S Pacific Central South Pacific Region Forecast Data
S S Pacific South Pacific Region Forecast Data
Central Pacific Central Pacific Region Forecast Data
Chile Peru Chile and Peru Region Forecast Data
Central America Central America Region Forecast Data
S S Atlantic South Atlantic Region Forecast Data
Madagascar Madagascar Region Forecast Data
Indian Indian Region Forecast Data
N Indian North Indian Region Forecast Data
WKergelen West Kergelen Region Forecast Data
Kergelen Kergelen Region Forecast Data
S Australia South Australia Region Forecast Data
Indonesia Australia Indonesia and Australia Region Forecast Data
Indonesia New Zealand Indonesia and New Zealand Region Forecast Data
China China Region Forecast Data
W Pacific West Pacific Region Forecast Data
N Japan North Japan Region Forecast Data
TasmanSea Tasman Sea 30-50S, 140-180E
DaimlerChrysler 60-10N, 75-0W
CapeTownRio 20-30S, 48W-25E
SydneyHobart 2-44S, 146-155E
NewportBermuda 42-32N, 74-64W
Central Atlantic Central Atlantic Region Forecast Data


NEW! 3 Minute Audio How to Download Free Grib Files with an iPod App over Iridium Satellite Phones. Click Here to listen now.







New! 3 Minute Audio Download

  • How to Download Free Grib Files with an iPod App Over Iridium Satellite Phones


  • Downloads...

  • FREE GRIB File Instructions

  • FREE GRIB Files

  • WeatherNet FREE Trial (includes GRIB Explorer & MetMapper)



  • Learn more...

  • GMN Favorite Marine WX Package
  • GMN Full Marine WX Package
  • GMN Pro Marine WX Package

  • WeatherNet Service
  • GRIB Explorer Software
  • GRIB Explorer Bathymetry
  • MetMapper Software

  • MacWX - WeatherNet for Mac
  • MacENC - GRIB Viewer for Mac

  • WindPlot GRIB Viewer

  • Coastal and Offshore Weather, The Essential Handbook






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