暑 is a Chinese hanzi, listed here under the keyword “hot”. It is built from 日 (sun) and 者 (that which). It appears as a component in 3 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “sun” + “that which”. 暑 is among the results, together with every other character containing the same shapes.
Open 暑 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.