高温多湿(こうおんたしつ)

A four-character compound: 高温(こうおん) (high temperature) + 多湿(たしつ) (high humidity). Extremely common when describing Japan's summer climate and frequently seen on product labels, weather forecasts, and storage instructions.

Common collocations

• 高温多湿(こうおんたしつ)の環境(かんきょう) — hot and humid environment
• 高温多湿(こうおんたしつ)な気候(きこう) — hot and humid climate
• 高温多湿(こうおんたしつ)を避(さ)ける — to avoid heat and humidity
• 高温多湿(こうおんたしつ)の場所(ばしょ) — hot and humid location

Usage

Very commonly seen on food packaging and product labels as a storage warning: 高温多湿(こうおんたしつ)を避(さ)けて保存(ほぞん)してください (store away from heat and humidity). Functions as a noun but can modify nouns with の or な.

Related words

• 高温(こうおん) — high temperature
• 多湿(たしつ) — high humidity
• 蒸(む)し暑(あつ)い — muggy, sultry (describes the feeling rather than the condition)
• 低温乾燥(ていおんかんそう) — low temperature and dry (the opposite condition)