il est quel mois?
In French, you would say "Quel est le mois ?" to ask "What is the month?"
You can ask "Which month comes after this month?" or "What is the month after this one?" to inquire about the upcoming month after the current one.
The month of October is "octobre" (month names are not capitalized in French).
The month is décembre (and is not capitalized in French).
Automne is not a month. It translates to autumn in French.
Germinal (french Republican calender search in wikipedia)
You say it exactly the same, but spell it as 'Mai'
The phrase "whole month" in French is "tout le mois."
juillet is the month of July in French.
The eleventh month in the French Revolution Calendar was called Brumaire.
You can ask "Qu'est-ce que c'est ?" to inquire "What is this?" in French.
mars