ショ 
あつ.い 
() sultry () hot () summer heat
     
あつい (adj-i) hot (weather, etc.), warm
あつさ (n) heat, hotness
しょちゅう (n) mid-summer
しょちゅうみまい (n) summer greeting card, inquiry after someone's health in the hot season
しょちゅうみまい (n) summer greeting card, inquiry after someone's health in the hot season

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字