候
コウ, そうろう

climate, season, weather

JLPT3 G4 S10 F510

As per 侯# (lumpy object) + a person (→ human agency) → inspect a lumpy or otherwise conspicuous object → *sign*; *symptom* (← that which attracts attention to a person/object); *scout* (← person who works following signs/clues); *weather* (← signs or indicators of weather). The application to 候 of the Japanese そうろう, a *classical verb ending*, represents a borrowed meaning.

[Full Kanji Etymology List]