Sendai's winters are harsh, with temperatures frequently dropping below freezing in January and February, but rising slightly by March. Spring arrives in April, bringing mild temperatures that gradually warm up throughout the month. Summer is hot and humid, with July and August often experiencing highs above 35°C. Autumn brings a reprieve from the heat, with comfortable temperatures returning in September and October. As winter returns in November and December, temperatures cool down again, but remain relatively mild compared to the depths of winter.