We don't have any "month" tags except for october. I am struggling to work out when such a tag would ever be useful.
Should we delete it?
In my opinion we do NOT need month tags. I have had a look at the three questions which have the
october tag. In all cases the question is not about the month but about traveling in the time period in which October is central. Autumn/fall would have worked in two of the three, in my opinion.
Mostly it does not make much of a difference whether you travel in one month or in the next, just a few days difference.
Yes, people who describe a travel will often mention a month, but tags are to find questions and I have yet to meet the person who specialized in answering questions about one particular month.