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

意気銷沈[ikishouchin] depressed in spirits
銷却[shoukyaku] erasure
銷沈[shouchin] depression

銷夏[shouka] summering
銷する[shousuru] to disappear