Nisshin, Japan experiences a temperate climate with distinct seasonal changes. Winters are relatively cold and snowy, with temperatures ranging from around -5°C to 17°C, averaging just above freezing in January and December. Spring arrives in March, bringing mild temperatures that gradually rise throughout the month, while autumn sees a similar pattern, with October being the warmest of the season. Summers are hot and humid, with temperatures often reaching over 30°C from June to August, while September offers a brief respite before the onset of winter. The annual temperature fluctuation is relatively wide, but overall, Nisshin's climate remains mild compared to other parts of Japan.