noun
Archaic poetic name for the sixth month of the lunar calendar. Compare 水無月 (みなづき), the more common classical name for the same month.
See also: 水無月
「常夏月」は陰暦六月の異称で、和歌などに使われた。
常夏月 is an alternate name for the sixth month of the lunar calendar, used in waka poetry and similar contexts.