When i import NetCDF file (.nc) to QGIS then I get a picture that consists of quite big pixels. Is it somehow possible to soften those pixels to get something like this:
If you want you want to make the boundaries look smoother you can apply a low pass smoothing filter or a Gaussian filter using SAGA in QGIS, e.g.:
To find these filters in QGIS follow this path:
Processing Toolbox -> SAGA -> Raster Filter -> Gaussian filter or
Keep in mind though that they will change your data values.