UGRIB: Weather Data for Free

by Aaron on April 16, 2007

UGRIB GRIB viewing and downloading software

Ben Ellison over at Panbo pointed out a nice, free software product for downloading and viewing GRIBs the other day. GRIBs are compact files created by NOAA’s forecasting models to predict wind speeds, directions, barometric pressure and rainfall. GRIB.US maintains a server and provides the software to easily select a specific region of the world and download this invaluable weather forecast information. GRIBs are very compact, so they are great for downloading when you have a slow data connection.

The UGRIB software is straightforward and nicely designed. Clicking on a point on the map brings up a neat graph window with wind strength, direction, barometric pressure, and rainfall predictions for that specific area. An animated view shows multi-day forecasts in quick succession to give a nice feel for how things are developing. The actual GRIB files are downloaded to a folder on your computer where they can be loaded by other navigation and routing software, too.

I’m not sure what GRIB.US’s business model is, i.e. whether they will start charging for aspects of the service at some point, but I’m grateful that they’ve created this great service and software. To try it out the service, you’ll need to register on the website.

{ 16 comments… read them below or add one }

GRIB.US April 19, 2007 at 4:38 pm


Thanks for the Ugrib review, we are glad that it is being put to good use.

As to our business model; rest assured that UGRIB and the current service will remain free.

We do have other offerings in the pipeline which may require a small payment but the reason that GRIB.US exists is that we felt other services were either too hard to use, or too expensive so useability and low cost remain our two most important goals.

Thanks again



Aaron April 25, 2007 at 9:13 pm

Thanks for stopping by and offering the informative reply. And thanks for making such a useful product freely available.


associação nautica da madeira April 9, 2008 at 8:01 am



associação nautica da madeira April 9, 2008 at 8:02 am



adi September 27, 2008 at 2:22 pm

i am looking for wether


adi September 27, 2008 at 2:22 pm



justin joubert March 4, 2009 at 7:45 pm

this weather forecast is good for sailors


justin joubert March 4, 2009 at 7:48 pm

sailing is great


don January 10, 2010 at 9:59 am


Is or has your site been down? Can’t seem to get on the last few days???


Ante Sclaunich April 8, 2010 at 8:08 am

It is a nice program, would like to have it for my work.



magdy April 17, 2010 at 6:06 am

hi i tray to log in


magdy April 17, 2010 at 6:07 am

hi itray to get wether


magdy April 17, 2010 at 6:09 am

it is nice program iwoud like to have for may work



Raimundo del Rio August 11, 2010 at 2:49 pm

I have applied by mistake to your program and have been charged for $65.-
I kindly ask you what is this program for, and how it can be used.
Perhaps you have an instruction manual you can send me to my mail.
Raimundo del Rio


Robin Mohr January 30, 2012 at 2:48 am

Hi, have done 2 Atlantic crossings on small yachts and used Ugrib files downloaded by relatives on land then sent via sat phone to the boat, so thanks again. Specifically with Egor last year, I mean 2010, you saved our hides.
A silly diversion, do you guys have anyway to add swell size and period as an option? Then I would never have to look at MSW again. Regards, Robin


azizi January 27, 2013 at 1:11 am

Que Dieu bénisse les USA. Thank…


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