暑 is built from the 日 and 者 components.
It belongs to a phonetic family with 諸, 署, 緒, and 曙 — they share the 者 component and the reading ショ.
A common word using 暑 is 暑い (あつい), meaning “hot (in reference to weather), warm”.
Don't confuse it with 緒, 諸, 署, and 著.
