Numata, Japan experiences a temperate climate with significant seasonal variation. Winters are cold and snowy, with temperatures often below freezing from January to March, averaging around 2-9°C. As spring arrives in April, temperatures rise rapidly, reaching an average of 12°C, and continue to warm up through May and June, with average highs sometimes exceeding 30°C. Summer months, July and August, are hot and humid, with temperatures frequently reaching the mid-30s Celsius. Autumn brings a return to milder conditions, with September and October averaging around 20°C, before cooling down again in November and December.