Vocabulary What does 8月 (はちがつ, hachigatsu) mean? 8月 (はちがつ, hachigatsu) means August. Quick factsReadingはちがつRomajihachigatsuPart of speechnoun 8月はちがつhachigatsuAugust1noun August2noun eighth month of the lunar calendarAlso written: 八月Kanji in this word月month; moon