Winters in Hadano, Japan are harsh and cold, with temperatures often plummeting below -30°C. The coldest months, January and February, see an average temperature of around -1°C, while the lowest recorded temperature is a chilly -31°C. As spring approaches, temperatures gradually rise, with March averaging 5°C and April reaching up to 26°C. Summers are warm and humid, with July and August experiencing highs often above 35°C and averaging around 22°C. Autumn brings mild temperatures, with September's average being similar to June's, but with cooler nights in October, signaling the end of warm weather.