Winters in Moriyama are chilly, with temperatures ranging from freezing cold to mild, averaging around 5-7°C. As spring arrives, temperatures gradually warm up, rising to an average of 11°C by March and 14°C by April, bringing blooming flowers and greenery. Summer months bring heatwaves, with temperatures often soaring above 30°C, peaking in July and August at an average high of 27-28°C. Autumn brings a welcome respite from the summer heat, with temperatures cooling down to around 10-15°C by November, before dropping again into winter's chill. The temperature fluctuations throughout the year create distinct seasons, with a relatively mild spring and autumn, and hot, humid summers.