Koka, Japan experiences a temperate climate with distinct seasonal changes. Winters are cool and chilly, with temperatures ranging from around freezing to the mid-teens Celsius in January and February, averaging just above 0°C. As spring arrives in March and April, temperatures gradually warm up, reaching as high as 28°C in April, but still experiencing occasional cooler days. Summer is hot and humid, with temperatures often soaring above 30°C in June, July, and August, while autumn brings a welcome respite from the heat, with comfortable temperatures in September and October before cooling down again in November and December.