How to Install and Compile wgrib2 on MacOS

Intel and Apple Silicon

Five different tutorials are available. All five tutorials rely on Homebrew for installation. Choose the tutorial based on the age of your Mac, the version of wgrib2 and the directory structure of your system, specifically the directory location of any previous Homebrew installation. (Intel, migrated from Intel, or new install Apple Silicon.).

These tutorials are designed for beginners. The tutorials are step-by-step.

Tutorial 1 – How to Install and Compile wgrib2 on MacOS Sequoia, Sonoma New Version 3.6

• NEW !Posted 02-20-2025
• New GitHub version 3.6 released February 2025
• Uses “cmake” build and compile instead of a makefile
• Easier to install than previous versions.
• For Apple Silicon Macs (can be adapted for older Intel Macs)
• Here’s the background and official announcement.

Tutorial 2 – How to Install and Compile wgrib2 on MacOS Sequoia, Sonoma

• Posted 12-05-2024
• Improved. Newly re-written and reorganized
• Installs on Sequoia and Sonoma
• Should also work for Ventura
• For both Apple Silicon Macs & Intel Macs
• wgrib2 version 3.1.3

Tutorial 3 – How to Install and Compile wgrib2 on MacOS (Ventura- Apple Silicon M1-M3)

• Posted 2/2024
• For Apple Silicon Macs only with new systems, not migrated from previous Intel. New “Clean” installs.
• Homebrew directory will be installed in /opt/homebrew
• wgrib2 version 3.1.3

Tutorial 4- How to Install and Compile wgrib2 on MacOS (Big Sur through Monterey, also Ventura on Intel or Apple Silicon migrated from Intel)

• Posted 7/2023
• For Intel Macs and Apple Silicon Macs with systems previously migrated from Intel using Migration Assistant or Carbon Copy Cloner or SuperDuper
• Homebrew already exists in directory /usr/local/homebrew
• wgrib2 versions 3.0.1 to 3.1.2 to 3.13. (Use the new v3.1.3)

Tutorial 5- How to Install and Compile wgrib2 on MacOS X and MacOS (El Capitan through Catalina & Mojave)

• Posted 2019
• Homebrew installed or will be installed in /usr/local/homebrew
• For older, Intel Macs only
• older versions of wgrib2 versions 2.7- 2.9

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