夏衣[natsugoromo] summer clothes
夏羽織[natsubaori] summer haori (coat)
夏越し[natsugoshi] keeping over the summer
夏掛け[natsugake] summer-use futon
夏期学校[kakigakkou] summer school

夏期時間[kakijikan] daylight-saving time
夏期大学[kakidaigaku] university summer school
夏季休暇[kakikyuuka] summer vacation
夏菊[natsugiku] early chrysanthemums

にいにい蝉[niiniizemi] Kaempfer cicada (Platypleura kaempferi)
みんみん蝉[minminzemi] Oncotympana maculaticollis (large black and green species of Oriental cicada)
夏蝉[natsuzemi] summer cicadas
蝉時雨[semishigure] outburst of cricket chirping
川蝉[kawasemi] kingfisher (esp. the common kingfisher, Alcedo atthis)

油蝉[aburazemi] large brown cicada (Graptopsaltria nigrofuscata)
虚蝉[utsusomi] man of this world
松蝉[matsuzemi] cicada abundant in late spring
唖蝉[oshizemi] voiceless cicada (female)