How humidity affects grind particle size

[Sparrow]

Hi all! I have an understanding that humidity affects grind particle size, but my question that I cant seem to find an answer for, is the following: when humidity increases, does the grind size as a rule need to be be made more coarse or fine? Or is there no rule and it could go either way?

Thanks!!

[baristasoul]

Re: How humidity affects grind particle size

Hi Sparow
The grind size should go courser if humidity increases.