LuckGrib is a fully featured, easy to use, fast GRIB reader, viewer and downloader for your Mac

LuckGrib uses beautiful and fast graphics to give you insight and understanding into how the weather and ocean conditions will change through a forecast as well as showing you the details of what happens at any location

Weather forecast data, packaged as GRIB files, can be downloaded directly from the high performance LuckGrib server cluster. Downloads from the server cluster are fast and free - you can easily explore the weather world wide using some of the best weather models available

Weather models are available which contain surface conditions, wave and swell state, ocean currents as well as higher altitude information, such as that found at the 850mb, 500mb and 250mb levels. Some of the models available are: GFS, CMC, WW3, HRRR, RAP, NAM, NDFD, Icon, GDPS, RTOFS.

Check the support site for additional information regarding model availability. Short videos are also available, as are tutorials and other information.

"The LuckGrib viewer is elegant, fast, and functional.... a must have app for all sailors using Macs for weather work."
—David Burch, Director of Starpath School of Navigation and author of Modern Marine Weather.

"LuckGrib…is a huge step forward in both functionality and ease of use when compared to anything else I have used."
— John Harries, Attainable Adventure Cruising.

• download your data directly from the high performance LuckGrib server cluster
• download weather and ocean data from models created by NOAA, Environment Canada, Météo-France and Deutscher Wetterdienst (DWD) in Germany
• both global and regional models are available
• high resolution GRIB models are supported. The appropriate view resolution is chosen automatically and dynamically as you zoom and pan
• elegant and beautiful interface
• smooth transitions and animation show how the weather or ocean conditions will evolve through the forecast
• sophisticated math - smooth and accurate interpolation
• instantly update graphical and textual information as you move your cursor around the GRIB files area
• support for sailors when planning a passage, during departure planning, as well as while on passage, through the points, routes and vessels features
• support for GRIB versions 1 and 2 allows you to import the widest range of information
• import GRIB files from outside sources, such as PredictWind, Ocens and Saildocs, among many others
• access to hundreds of GRIB parameters (wind, rain, pressure, temperature, CAPE, CIN, humidity, wave information, ocean current data, vorticity, simulated radar, and many more.)
• an internet connection is not required to view imported files - LuckGrib acts as a fully functional viewer when you are away from the internet

LuckGrib has a built in GRIB file librarian, allowing you instant access to all of your GRIB files. Switching between GRIB files is very fast, allowing you to compare the results of different models or to watch how a forecast evolves over time

Download and start to use LuckGrib now - you will be joining a growing group of people with access to the best GRIB software available

What's New

Version 2.0.5

• fixed a couple of issues on High Sierra (macOS 10.13) and on retina displays
• other minor enhancements

Ratings and Reviews

Simply Awesome


If you are looking for a grib viewer or even just a way to look at an incredibly wide array of weather data look no further.

This program is head and shoulders ahead of what else is out there; it has everything from GFS to HRRR to ASCAT.

Simply Awesome.


Weather Enthusiast 3.14

If you are a weather enthusiast and are looking for an app to take it to the next level, look no further. This is what you have been waiting for!

Grib Viewer for Mac


First off, the software creator, Craig, is awesome. Before purchasing this app I sent him an email asking a couple questions and he responded almost immediately.

Second off, this is hands down the best grib viewer for Mac. I spent quite a bit of time trying to port grib viewers from Windows/Linux on to Mac and I spent quite a bit of time trying to find one that was natively supported by Mac. Long story short, I stumbled across this gem.

I have rougly 10 years of forecasting experience for aviation and remote expeditions. I would like to note that I do not have a sailing background, which is what this app is focused towards. However, for what I do this app is amazing. It’s fast and efficient, and the software developer is quick to respond to any issues. There is a pretty extensive list of things you can do as far as creating your own styles and color schemes and if you have a meteorological background then this app is for you.


Craig McPheeters
51.2 MB
Age Rating
Rated 4+
© 2015-2017 Craig McPheeters


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer