xià zhì
夏至
Summer solstice

yán rè
炎熱
(Of weather) scorching, burning hot

zhòng sh?
中暑
Heatstroke; suffer heatstroke

shàng hu?
上火
To suffer from excessive internal heat (with such symptoms as constipation, conjunctivitis and inflammation of the nasal and oral cavities)

sān fú tiān
三伏天
The dog days of summer — the hottest, most sultry days of summer

shēng fèi zi
生痱子
To suffer from prickly heat or heat rash

fáng shaì shuāng
防曬霜
Sunscreen

zhē yáng s?n
遮陽傘
Parasol, sun umbrella