It is very easy to open netCDF files in MATLAB. You only need to know few functions like ncdisp, ncinfo, ncread.
First use ncdisp('myncfile') this will list all the contents of the file like variables (say lon,lat,temp) present in it and their dimensions. Once you know what are the variables present in the file, use ncread to load that variable.
lon = ncread('myncfile','lon') ;
lat = ncread('myncfile','lat') ;
Read about ncdisp and ncread.
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