height of summer; hottest part of summer
Refers to the peak summer heat period, often used in formal seasonal greetings like 暑中お見舞い申し上げます.
Mid-summer greetings.
The intense sunlight of high summer continues.
盛夏 is a formal, literary word for the height of summer, close in meaning to 暑中 but rarely used in greeting phrases.
寒中 refers to the coldest part of winter and is used in parallel formal greetings (寒中見舞い) opposite 暑中's summer greetings.
暑中 refers to the hottest period of summer, the seasonal opposite of 寒, the coldest period of winter.
summer greeting card; midsummer inquiry after someone's health
summer vacation; summer break
summer greeting card; midsummer inquiry after someone's health
summer greeting card; midsummer inquiry after someone's health
Compound of 暑 (heat) and 中 (middle, during), literally 'in the midst of heat'.