I have installed cfgrib on my macOs by doing the following
python3.8 -m pip install cfgrib
Now if I open try to import cfgrib
import cfgrib
I get
RuntimeError: ecCodes library not found using ['eccodes', 'libeccodes.so', 'libeccodes']
I solved it by installing cfgrib via homebrew.
brew install eccodes
The package cfgrib depends on the eccodes python package to access the ECMWF ecCodes binary library.
So install:
pip install eccodes
After that you can try:
python -m cfgrib selfcheck
You should get an output like this:
Found: ecCodes v2.20.0.
Your system is ready.
Hopefully this will solve your problem.
If not, maybe you have to install the packages that are listen in your error message.