noun
end of summer
Obsolete term. Refers to the closing period of summer, typically in the context of the traditional lunar calendar.
季夏は旧暦の六月にあたる。
季夏 corresponds to the sixth month of the old lunar calendar.
noun
sixth month of the lunar calendar
Specifically denotes the sixth month in the traditional Japanese lunar calendar, which roughly aligns with late summer in the modern calendar.
季夏の頃には暑さが和らぎ始める。
Around the sixth month of the lunar calendar, the heat begins to ease.