I think both are fine, however, I would not use 'these days'. Instead I would say:
It's quite rainy at the moment. - 'at the moment' in this case, does not mean the exact moment, but how you used 'these days'.
It's been raining a lot lately. - same meaning as above, just a different way of saying it.
It's been raining quite a bit lately. - same as above
Good luck,
Tim