Sasagawa, Japan experiences a distinct seasonal pattern. Winters are cold and snowy, with temperatures often below freezing from January to March, but slowly warming up by April. Spring arrives in late March and early April, bringing mild temperatures that gradually increase throughout the season. Summers are hot and humid, with temperatures soaring above 30°C from June to August, while autumns are characterized by a gradual cooling trend, with September being the warmest month of the season. As winter returns, temperatures drop once again, but this time with less extreme fluctuations.