I have worked with netCDF files in QGIS before, but since I installed QGIS 3.6 they won't load ("myfile.nc" is not an admitted raster data source), nor do they load in QGIS 2.18 anymore. I find this particularly strange. I am working under Windows 10. It appears both versions of QGIS are using GDAL 2.2.4. I don't know if that is the problem but when I run gdalinfo --formats on the OSGeo4W Shell, netCDF does show up:
netCDF -raster,vector- (rw+s): Network Common Data Format
I was looking for a way to downgrade GDAL in case this was the problem but did not find anything feasible at my level. Any help would be welcome.