A rare, poetic name for the sixth month of the lunar calendar, associated with the time when cicadas shed their wings. It is rare and cross-references 水無月, the more common name for the same month.
See also: 水無月
蝉の羽月 is one of the elegant names for the sixth month of the lunar calendar.
The name literally means 'cicada wing month', likely referring to the time when cicadas shed their wings. The exact historical derivation is uncertain.