Refers to the characteristic weather conditions of a particular season or region. Often used in contexts like 季候の変化 (seasonal changes) or 温暖な季候 (mild climate).
This region has a mild climate and is comfortable all year round.
It is necessary to adjust clothing according to seasonal changes.
Compound of 季 (ki, 'season') and 候 (kō, 'climate' or 'weather'). The exact historical derivation is uncertain, but the kanji combination directly suggests the meanings 'season' and 'climate'.