Kawasaki's winters are cool and sometimes chilly, with January and December averaging around 4-6°C. Spring brings mild temperatures, gradually warming up from March's average of 12°C to April's 14°C, before May's heat sets in. Summer months are warm to hot, with July and August often reaching highs above 30°C. Autumn is relatively cool again, with October averaging around 17°C, before the chill of winter returns.