noun
three summer months
Refers to the three months of summer (traditionally the 4th, 5th, and 6th months of the lunar calendar, roughly June, July, and August in the modern calendar). Used in literary or seasonal contexts.
三夏の暑さを乗り切るには、こまめな水分補給が欠かせない。
To get through the heat of the three summer months, frequent hydration is essential.